Rough & Tumble Lapidary

Updated
18th April 2008

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TUMBLE POLISHED STONES

CUSTOM POLISHED STONES AND JEWELLERY

OTHER LAPIDARY PAGES...



Over 100 different types of
tumble polished stones

(Click on this picture to enlarge it)

Rough & Tumble Lapidary

Derek Haselden
317 Bursledon Road
Sholing
Southampton
SO19 8NE

Tel/Fax: 023 8042 2218
(+44 23 8042 2218)

ratl@delscope.demon.co.uk

TUMBLESTONES

Most of the stones for sale on this page are illustrated with photos. My apologies in advance for the graininess for some of the photos - with something like 100 photos it was necessary to use low-resolution photos, lest you wait an eternity for the page to load! If you do wish to see higher quality photos please let me know.

Tumble polished stones come in a great variety - at the last count I had over 100 different kinds of polished stone for sale - a substantial but small proportion of stones that can be tumble polished. That said, there is little that I cannot obtain if I don't hold it in stock, please ask if you don't see what you are after. Also, unlike some retailers, there is no minimum order - one stone or a hundred, 10 pence or £10, I am happy to supply.

These stones come in a variety of shapes and more often or not no two stones are quite the same. Most stones available are in 3 sizes (or weights): Small, Medium, or Large. Medium (5g-8g) is the most popular size stone and the most widely available. A few stones varieties are available in sizes outside of these 3 ranges. Some stones fall outside of these ranges either because of their shape or their density (Malachite, Haematite and other metal-rich stones are good examples).

Some stones simply do not readily lend themselves to being tumbled polished due to their structure or natural occurance and only appear in certain sizes. Some stones come in larger sizes (Extra large and so forth) please ask for details of availability. Decent sized examples of stone like Haematite and Malachite will usually fall into the Large and above ranges owing to their high density although in most cases smaller sizes are often held in stock...


SIZEWEIGHTDIMENSIONSSTONES / 100g STONES / 500g
Extra Small (ES) 0-2g 5mm-10mm50-100250-500
Small (S) 2-4g 10mm-15mm20-40 100-200
Medium (M) 5-8g 15mm-20mm10-17 40-80
Large (L) 9-12g20mm-30mm 7-9 30-40
Extra Large (XL) 13-16g25mm-40mm 5-6 25-30
Extra, Extra Large (XXL)17-20g35mm-50mm 4-5 20-25

Dimensions and numbers are only approximate since tumble polished stones vary greatly in their shape but for every stone type there will usually be a shape or variation in colour or pattern to suit someone. If you do want a particular stone with a certain appearance please do not hesitate to specify what you want if you place an order.

I will also tumble polish quantities of stone upon request, either that supplied by a customer, or drawing from existing or purchased stock. It is difficult to put an exact figure on how long stone will take to polish but a general guide would be 14 weeks from start to finish, it could be less than that though. In the case of 14 weeks the total charge would be about £21.00 for every 1 kg of stone, less postage and packing.

In some cases a stone may be required to have a particular shape or size, often as a result of a customer's preference. In this case the raw stone is given an initial shape and size and them tumble polished. This markedly reduces the time needed and in some cases the total time needed could be as little as 5 weeks. Please be aware that while such requests are welcome it does take quite some time to break up stone and get it polished, in some cases up to 3 months is not unusual if tumble polishing is involved.

On many occasions a customer has wanted stone to be cut, shaped and then polished by hand. Although there is a charge for this service turnover time may be just a few days depending on available stone and time. For a guide to the cost of this service please see the price list further down this page.

I hope you are able to see something that you might like to buy or enquire about and in any event if I don't have it I can certainly try to get it for you. There are several hundred types of stone that can be tumble polished and it would be impossible for me to hold everything in stock. Please feel free to ask about any type of stone that may be of interest to you.
Derek Haselden.

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PRICE LIST FOR TUMBLE POLISHED STONES: JANUARY 2008 - JUNE 2008

For a printer friendly version of this price list click here.

All tumblestones are sold by weight with most stones starting at about 1 gram. Most of the stones held in stock are anything from 3 to 10 grams in weight although a few are larger or smaller. Please ask for availability of outsized stones. The list below details the cost by weight for each type of pre-polished stone... 


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  2 pence per gram
  Extra small, 2g = 4p   Small, 4g = 8p   Medium, 8g = 16p   Large, 12g = 24p   50g = £1.00

  Agate, dyed              Amazonite                Amethyst (B)             Black Agate (Jasper)
  Black Obsidian           Bloodstone               Blue Aventurine          Blue Howlite
  Blue Tigers Eye          Botswana Agate           Bronzite                 Blue Goldstone

  Brown Goldstone          Brown Jasper             Carnelian                Chert
  Chevron Amethyst         Citrine                  Clear Quartz             Dalmation Jasper
  Dumortierite             Flint                    Gold Tigers Eye          Green Aventurine

  Green Jasper             Green Moss Agate         Hematite                 Hickoryite
  Jade (Serpentine)        Jasper Iron              Leopardskin              Mahogany Obsidian
  Mexican Jasper           Mookaite                 Onyx, Black banded       Orange Aventurine
  
  Pale Amethyst (B)        Pale Rose Quartz (B)     Picture Jasper           Red Jasper
  Red Tigers Eye           Red/Green Moss Agate     Rhodonite                Sardonyx
  Selenite                 Smoky Quartz             Snow Quartz              Snowflake Obsidian

  Sodalite                 Tree Agate               Unakite                  Verdite
  White Howlite            Yellow Aventurine        Yellow Jasper
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  3 pence per gram
  Extra small, 2g = 6p   Small, 4g = 12p   Medium, 8g = 24p   Large, 12g = 36p   50g = £1.50

  Fossilised Wood          Mugglestone              Ocean Jasper             Rutillated Quartz (B)
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  4 pence per gram
  Extra small, 2g = 8p   Small, 4g = 16p   Medium, 8g = 32p   Large, 12g = 48p   50g = £2.00

  Amethyst, dark (A)       Chiastolite              Raspberry Aventurine     Turitella fossil jasper
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  5 pence per gram
  Extra small, 2g = 10p   Small, 4g = 20p   Medium, 8g = 40p   Large, 12g = 60p   50g = £2.50

  Ametrine (A)             Iolite (B)               Lepidolite (B)           Quartz with Chlorite
  Garnet (Rhodolite)
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  6 pence per gram
  Extra small, 2g = 12p   Small, 4g = 24p   Medium, 8g = 48p   Large, 12g = 72p   50g = £3.00

  Angelite                 Aquamarine (B)           Blue Lace Agate (A)      Chrysocolla (B)
  Fluorite (A)             Garnet (Almandine)       Jade (Nephrite)          Malachite
  Mangano Calcite          Merlinite                Rose Quartz (A)          Sunstone (B)
  Thulite                  Tourmalinated Quartz
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  8 pence per gram
  Extra small, 2g = 16p   Small, 4g = 32p   Medium, 8g = 64p   Large, 12g = 96p   50g = £4.00

  Blue Apatite             Chrysoprase              Labradorite (A)          Pietersite
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  10 pence per gram
  Extra small, 2g = 20p   Small, 4g = 40p   Medium, 8g = 80p   Large, 12g = £1.20   50g = £5.00

  Blue Chalcedony (B)      Celestite                Citrine (Natural)        Pyrite
  Shattuchite
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  12 pence per gram
  Extra small, 2g = 24p   Small, 4g = 48p   Medium, 8g = 96p   Large, 12g = £1.44   50g = £6.00

  Lapis Lazuli (A)         Rainbow Obsidian         Rhodochrosite            Sugilite
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  13 pence per gram
  Extra small, 2g = 26p   Small, 4g = 52p   Medium, 8g = £1.04   Large, 12g = £1.56   50g = £6.50

  Chrysocolla (A)          Eudialyte
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  20 pence per gram
  2g = 40p   4g = 80p   6g = £1.20   8g = £1.60   10g = £2.00   50g = £10.00

  Astrophyllite            Charoite
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  45 pence per gram
  1g = 45p   2g = 90p   3g = £1.35

  Jet (A)
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  75 pence per gram
  1g = 75p   2g = £1.50   3g = £2.25

  Amber (A)
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CUSTOM STONE PROCESSING AND POLISHING
I will also work stone upon demand for customers. This could be any of the following: cutting, grinding, polishing, drilling, shaping...

  • My charge for this service is £9.60 per hour.
For example, 1.0mm, 1.5mm, 2.0mm, 2.5mm holes take about 5-10 minutes to drill so the cost would be 80p to £1.60 per hole. (Note: The time needed to drill a hole varies according to the depth of hole needed and the hardness of the material, in some cases holes may take 15 minutes or more to drill.)

The cost of shaping and polishing stone(s) from scratch varies depending on size/weight and hardness of stone. An estimate cost for shaping and polishing single stones would be...

  • Up to 5 grams final weight, 30 to 45 minutes, £4.80 to £7.20 per stone.
  • Up to 10 grams final weight, 45 minutes to 1 hour 15 minutes, £7.20 - £12.00 per stone.
  • Up to 15 grams final weight, 1 hour to 1 hour 30 minutes, £9.60 - £14.40 per stone.
Naturally, the shape and complexity of work needed will be reflected in the final cost. Also, the cost of the raw stone will have to be added. The above figures are estimates and may vary up as well as down.

STONE TUMBLING
I am also happy to tumble polish stone for customers, either stone supplied by me or customer supplied stone.

  • Coarse tumbling * £2.00 per week. (Note: could be 10 or more weeks in total.)
  • Fine tumbling * £2.25 per week. (Note: typically 2 weeks duration.)
  • Polish tumbling * £1.50 per week. (Note: typically 2 weeks duration.)
* The above rates apply to stone(s) assuming an initial weight of 3 pounds (1.3kg). For example, 100g of supplied stone taking 14 weeks to final polishing would cost £2.00

PACKAGING

  • 50p per package up to 500g.
  • Additionally 25p per 500g thereafter.
Weight of packaging typically starts at 25g.

POSTAGE
Example postage costs are...

  • Up to 100g total weight: £1.14 first class, £0.95 second class.
  • Up to 250g total weight: £1.45 first class, £1.24 second class.
  • Up to 500g total weight: £1.94 first class, £1.63 second class.
  • Up to 750g total weight: £2.51 first class, £2.08 second class.
  • Up to 1 kg total weight: £3.08 first class, £2.49 second class.
These prices are for 'Packets' over 353 x 250 x 25mm, mainland UK delivery. Other postal rates requested or deemed necessary will be calculated and quoted prior to despatch.

The above are examples only. The cost of p&p depends on the final weight of the package, type of postage, and how quickly you want delivery.

For a printer friendly version of this price list click here.


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Agate

All agate is a microcrystaline variety of silica (silicon dioxide). If the silica forms without bands of alternating colour it is referred to as chalcedony (transparent to semi-transparent) or jasper (opaque). If, however, the silica forms with distinct parallel bands it is referred to as agate. Agate forms as nodules or veins in host rock formations, the surrounding rock chemistry being responsible for the many hues that are imparted into the agate. Silica is a widespread mineral belonging to the quartz family (itself one of the largest rock families) and takes on a great number of appearances and this is reflected in the wide variety of agates available. Many countries worldwide have agates of some description in their geology, often with its own distinct appearance. A selection of several types of agate available now follows...

Dyed Agate

Agate (dyed)

  • Price: 2p per gram. (S = 8p, M = 16p, L = 24p.)
Agate often has only faint colouration but since most agates are pervious to water and dyes, agate can be treated to take on more dramatic appearances. In this case agate (often of Brazilian origin) is stained with brightly coloured dyes to make the agate red, blue, green, purple, black/brown, yellow, or other shades.

Black Agate

Agate, Black

  • Price: 2p per gram. (S = 8p, M = 16p, L = 24p.)
This is really a black jasper with faint smudges and bands of grey and white.

Blue Lace Agate 'A'

Agate, Blue Lace

  • Price: 'A' grade, 6p per gram. (S = 24p, M = 48p, L = 72p.)
One of the best known and popular agates, Blue Lace Agate is known for its pale blue colour and fine white bands, the colouration is natural.

Grey Botswana Agate

Agate, Botswana, grey

  • Price: 2p per gram. (S = 8p, M = 16p, L = 24p.)
Many agates are faintly banded and only take on a beautiful marking by being artificially dyed. Botswana Agate is an exception to this rule and the two types of Botswana Agate need no treatment. The grey variety is generally semi-transparent and has well defined bands of white, grey, and brick red.

Pink Botswana Agate

Agate, Botswana, pink

  • Price: 2p per gram. (S = 8p, M = 16p, L = 24p.)
The pink variety of Botswana Agate has more subtle markings and is usually opaque. It is generally made of pale hues of pink, white, grey, orange, and brown.

Mexican Agate

Agate, Mexican

  • Price: 2p per gram. (S = 8p, M = 16p, L = 24p.)
  • Alternative names: Mexican Jasper, Vaquila.
Mexican Agate is one of my favourite stones - a mix of browns, reds, yellows, and clear bands, within a tan coloured rock. It usually has an excellent polish and is generally opaque. Strictly speaking it is not an agate at all, rather it is a mixture of coloured jasper and chalcedony with brown being the predominant colour.

Green Moss Agate

Agate, Moss, green

  • Price: 2p per gram. (S = 8p, M = 16p, L = 24p.)
Green Moss Agate is a clear stone with green moss/fern/tree-like inclusions of hornblende or manganese compounds. Another stone with the label 'Agate' but it is actually a clear chalcedony with green, moss-like inclusions.

Red, Green Moss Agate

Agate, Moss, red/green

  • Price: 2p per gram. (S = 8p, M = 16p, L = 24p.)
Red/Green Moss Agate is not really an agate in the strict sense although the name has stuck. Rather, it is a semi-transparent chalcedony that has red and green (sometimes golden) inclusions which appear moss-like.

Tree Agate

Agate, Tree

  • Price: 2p per gram. (S = 8p, M = 16p, L = 24p.)
Tree Agate is not really an agate at all, it is actually a bright white jasper with fine, bright green inclusions. An occasional name variation is 'Green Tree Agate'.

Amazonite

There are many varieties of Amazonite, a type of feldspar, the proper name for this stone is actually 'Microcline'. It is also called 'Amazonstone' on occasion, and can be coloured white, yellow, pink or green, the green variety used as a gemstone is called Amazonite.

Light Green Amazonite

Amazonite, light green (Chinese)

  • Birthstone: August (as an alternative to Peridot).
  • Price: 2p per gram. (S = 8p, M = 16p, L = 24p.)
The light green variety, often Chinese in origin, tends to have a satin rather than glossy finish and often takes on regular, angular shapes when tumble polished.

Mid Green Amazonite

Amazonite, mid green (Russian)

  • Birthstone: August (as an alternative to Peridot).
  • Price: 2p per gram. (S = 8p, M = 16p, L = 24p.)
The mid-green variety, often of Russian origin, usually has a higher polish than the light green variety and is often flecked with paler greens or white. It tends to be more rounded in shape when tumble polished.

Amber

  • Composition: organic compounds, mainly tree resin.
  • Hardness: 2.0-2.5.
  • Specific gravity: 1.0-1.1.
  • Alternative names: Succinite.
  • Birthstone: November (as an alternative to Topaz or Citrine).
  • Price: 75p per gram - unpolished; £1.25 per gram - hand polished.
Amber is a petrified resin from ancient conifer trees. Plant or insect remains are often found within Amber - thoughts of 'Jurassic Park' abound. Amber varies in colour from pale yellow through to brown/orange. Less common is a green variety, rarer still, blue and black. A younger, less colourful variety of Amber is Copal. The most famous deposits of Amber come from the Baltic regions although it is occasionally found elsewhere. Because of its relative scarcity Amber is quite expensive although being a light material there is more of it per gram. Amber is often attractive in its own right but can be polished which invariably makes its appearance and clarity stunning.

Amethyst

All Amethyst is a variety of quartz (typically a clear/white crystalline stone) the lilac/mauve colour is due to small iron impurities. Plain Amethyst can vary in its depth of colour, ranging from semi-opaque to transparent, pale lilac to a deep lustrous mauve, Amethyst is probably one of the best known and easy to identify semi-precious stones.

Chevron Amethyst

Amethyst, Chevron

  • Price: 2p per gram. (S = 8p, M = 16p, L = 24p.)
Sometimes called 'Dog Tooth Amethyst' it is usually very deep in colour with the addition of striking angular white bands - hence the name.

Dark Amethyst

Amethyst, Dark

  • Price: 4p per gram. (S = 16p, M = 32p, L = 48p.)
Dark Amethyst is the most sought after of the Amethyst family and has a distinctive deep mauve colour.

Pale Amethyst

Amethyst, Pale

  • Price: 2p per gram. (S = 8p, M = 16p, L = 24p.)
Pale Amethyst is clear to semi-transparent, lilac in colour.

Ametrine 'A'

Ametrine

  • Composition: silicon dioxide (silica). SiO2.
  • Hardness: 7.0.
  • Specific gravity: 2.65.
  • Price: 'A' grade, 5p per gram. (S = 20p, M = 40p, L = 60p.)
Ametrine is a clear amethyst but with the addition of a yellowed quartz (like Citrine) making nice examples of Ametrine an interesting mix of colour. The name Ametrine comes from a conjunction of Amethyst and Citrine.

Angelite

Angelite

  • Composition: strontium sulphate. SrSO4.
  • Hardness: 3.0-3.5.
  • Specific gravity: 4.0.
  • Alternative names: Celestine, Celestite.
  • Price: 6p per gram. (S = 24p, M = 48p, L = 72p.)
A less common mineral, Angelite is a cloudy, pale blue version of Celestine or Celestite. The mineral tends to form in nodules and if the nodule is solid and compact Angelite is the result. These nodules often form with a white chalky coating or patina and Angelite may be streaked with white, the mineral is quite soft and is easily shaped and polished. Angelite is usually a distinctive powder blue but may sometimes pale towards off-white. (If the nodules are hollow and crystalline Celestine, also called Celestite, are the result.

Apatite, Blue

  • Composition: calcium fluoro phosphate. Ca5(PO4)3(F)
  • Hardness: 5.0.
  • Specific gravity: 3.1-3.2.
  • Price: 8p per gram. (S = 32p, M = 64p, L = 96p.)
This azure blue mineral is very distictive in its colour and overall appearance. Most of us should be familiar with Apatite - our teeth are made of it! Apatite has several variations in colour and composition, the blue variety being popular with collectors. Green, red, violet and brown varieties also occur.

Aquamarine

Aquamarine

  • Composition: beryllium aluminium silicate. Be3Al2S6O18.
  • Hardness: 7.5-8.0.
  • Specific gravity: 2.6.
  • Birthstone: March.
  • Price: 6p per gram. (S = 24p, M = 48p, L = 72p.)
Aquamarine belongs to the Beryl family of minerals. Aquamarine is coloured pale green/blue and is a widely occuring mineral. Individual crystals are less common and more expensive. The massive variety, often polished as tumblestones, is opaque to semi-transparent, pale green/blue. (More for information purposes here: green Beryl is called Emerald; yellow Beryl is called Heliodor; pink Beryl is called Morganite; white or colourless Beryl is called Goshenite; red Beryl is called Bixbite.)

Astrophyllite

Astrophyllite

  • Composition: potassium or sodium, iron or manganese, titanium hydroxysilicate. (K,Na)3(Fe,Mn)7Ti2Si8O24(O,OH)7.
  • Hardness: 3.0.
  • Specific gravity: 3.3.
  • Price: 20p per gram. (S = 80p, M = £1.60, L = £2.40.)
This is a fairly rare crystal found only in a few localities. It takes the form of fine needle like crystals, often in a radiating pattern, found within and upon small patches on a host rock formation. The tiny crystals are usually yellow to bronze in colour but may alter depending on the host rock. Astrophyllite sold as tumblestones is usually deep blue/black with a striking glittery metallic appearance.

Aventurine

Aventurine is a massive (crystals visible to the naked-eye) variety of quartz which often has a metallic sparkle. It is a widespread mineral and can often form huge masses weighing several tonnes. Its widespread appearance over several localities give rise to many different colours...

Blue Aventurine

Aventurine, Blue

  • Price: 2p per gram. (S = 8p, M = 16p, L = 24p.)
Blue Aventurine can initially be confused with Sodalite but the former has a dark blue/grey colour whereas the latter is usually a deep vivid blue.

Green Aventurine

Aventurine, Green

  • Price: 2p per gram. (S = 8p, M = 16p, L = 24p.)
The green variety of Aventurine owes its colour to small inclusions of fuschite mica. It generally comes in two shades - light green and emerald green, the latter often having a sparkly appearance.

Orange Aventurine

Aventurine, Orange

  • Price: 2p per gram. (S = 8p, M = 16p, L = 24p.)
Orange aventurine owes its colour to small hematite inclusions and will often range from a peach colour through orange to brown. Orange aventurine is sometimes called 'Sunstone', an incorrect naming since Sunstone is actually part of the feldspar group - Aventurine is part of the quartz group.

Raspberry Aventurine

Aventurine, Raspberry

  • Price: 4p per gram. (S = 16p, M = 32p, L = 48p.)
A less common variety of Aventurine, sometimes known as 'Plum Aventurine', this variety of quartz has a striking crimson to wine colour.

Yellow Aventurine

Aventurine, Yellow

  • Price: 2p per gram. (S = 8p, M = 16p, L = 24p.)
A light yellow coloured variety of Aventurine.

Bronzite

Bronzite

  • Composition: magnesium iron silicate. Mg,Fe2Si2O6.
  • Hardness: 5.0-6.0.
  • Specific gravity: 3.25-3.35.
  • Alternative names: Enstatite.
  • Price: 2p per gram. (S = 8p, M = 16p, L = 24p.)
This is an appropriately named stone, it really does look like bronze and has the weight, feel and appearance of a metal. Once recognised, Bronzite is unlikely to be mistaken for any other stone.

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Carnelian

Carnelian

  • Composition: silicon dioxide (silica). SiO2.
  • Hardness: 7.0.
  • Specific gravity: 2.65.
  • Birthstone: July (as an alternative to Ruby).
  • Alternative names: Cornelian.
  • Price: 2p per gram. (S = 8p, M = 16p, L = 24p.)
Carnelian is a beautiful, warm coloured stone ranging from yellow/orange through to orange brown. Grading through to brown it may be referred to as 'Sard' or Sardstone. Semi-transparent it usually has very subtle mottling and colour variations within.

Celestite

  • Composition: strontium sulphate. SrSO4.
  • Hardness: 3.0-3.5.
  • Specific gravity: 4.0.
  • Alternative names: Celestine.
  • Price: 10p per gram. (S = 40p, M = 80p, L = £1.20.)
Celestite is a clear crystalline Angelite. The mineral tends to form in nodules and if the nodule is solid and compact Angelite is the result. If the nodules are hollow and crystalline Celestine, also called Celestite, are the result and like Angelite, Celestite crystals have a distinctive pale blue colour.

Chalcedony

Chalcedony is a widely occuring mineral belonging to the quartz group, these microcrystalline varieties of silica form a wide range of minerals. Flint and Chert are chalcedony's for example and the coloured varieties are sought after. If microcrystalline silica forms in transparent to semi-transparent masses it is referred to as chalcedony; If it forms with bands, an agate; if it forms in opaque masses it is called jasper. Chemically, all chalcedony's, agates and jaspers are near identical, only minute impurities imparted alter colour and appearance.

Blue Chalcedony 'B'

Chalcedony, Blue (B)

  • Price: 10p per gram. (S = 40p, M = 80p, L = £1.20.)
Despite the abundance of chalcedony, the blue variety is not so common and its pale blue, clear appearance makes this a sought after stone.

Charoite

  • Composition: (Potassium or Strontium or Barium), (Calcium or Sodium), fluorohydroxyaluminosilicate. (K,Sr,Ba)(Ca,Na)2(Si,Al)4O10(OH,F).
  • Hardness: 5.0-6.0.
  • Specific gravity: 2.6.
  • Price: 20p per gram. (S = 80p, M = £1.60, L = £2.40.)
An opaque mineral with quite complex chemistry, rare, and noted for its dark lilac, fibrous appearance. It occurs largely in one area of Russia and appears in veins within a host rock. This is another stone that has a near unique appearance and good examples of Charoite are prized for use in jewellery.

Chert / Flint

Chert/Flint

  • Composition: silicon dioxide (silica). SiO2.
  • Hardness: 7.0.
  • Specific gravity: 2.65.
  • Alternative names: Firestone.
  • Price: 2p per gram. (S = 8p, M = 16p, L = 24p.)
Chert and Flint are common stones occuring in a wide variety of places. The silica is usually infused with impurities and organic compounds which give rise to a remarkable variety of earthy colours. Flint has a long-standing relationship with mankind since it was used during the Stone-Age for making tools. The term Flint is usually reserved for the nodular grey/black masses found in chalk formations. The alternative term for Flint, Firestone, stems from the sparks that are given off when Flint is struck hard. Chert usually appears as woody coloured masses within a host rock and both Flint and Chert are found in huge quantities in gravels, shingles, and on beaches. It is a hard durable stone that takes a good polish.

Chiastolite

Chiastolite

  • Composition: aluminium silicate. Al2[O|SiO4].
  • Hardness: 6.5-7.5.
  • Specific gravity: 3.1-3.2.
  • Alternative names: Andalusite, Cross-stone.
  • Price: 4p per gram. (S = 16p, M = 32p, L = 48p.)
Chiastolite is a variety of Andalusite which is a mineral that forms prismatic crystals in an almost square cross-section. When cut and polished in the right orientation the result is a warm brown stone with a cruciform pattern visible.

Chrysocolla 'A'

Chrysocolla

  • Composition: hydrated copper silicate. (Cu,Al)2H2Si2O5[OH]4. nH2O).
  • Hardness: 2.0-4.0.
  • Specific gravity: 2.0-2.4.
  • Price: 'A' grade, 13p per gram. (S = 52p, M = £1.04, L = £1.56.)
  • Price: 'B' grade, 6p per gram. (S = 24p, M = 48p, L = 72p.)
Chrysocolla is a soft, often crumbly stone that is difficult to polish but has a beautiful green/blue colour owing to the copper compounds within. In this respect it is often the source of exploitable copper ore. The 'A' grade variety usually has more blueish colour and a higher polish.

Chrysoprase

Chrysoprase

  • Composition: silicon dioxide (silica). SiO2.
  • Hardness: 7.0.
  • Specific gravity: 2.65.
  • Birthstone: May (as an alternative to Emerald).
  • Price: 8p per gram. (S = 32p, M = 64p, L = 96p.)
Chrysoprase is a microcrystalline translucent variety of quartz. It has the same composition as all chalcedony or jasper but with an unmistakeable bright apple green colour. The best examples come from Australia.

Citrine

Citrine is another form of quartz (quartz forms a large family of stone) with a vivid yellow hue. Another name for Citrine is 'Cairngorn' but it is sometimes termed as yellow topaz - a misleading (and incorrect) term.

Citrine

Citrine, heat treated

  • Birthstone: November (as an alternative to Topaz or Amber).
  • Price: 2p per gram. (S = 8p, M = 16p, L = 24p.)
Most Citrine is in fact treated amethyst or smoky quartz which renders the mauve/violet colour a bright yellow.

Natural Citrine

Citrine, Natural

  • Price: 10p per gram. (S = 40p, M = 80p, L = £1.20.)
Natural Citrine is usually very clear with a more subtle straw to pale yellow hue.

Dumortierite

Dumortierite

  • Composition: aluminium borosilicate. Al7(BO3)(SiO4)3 O3).
  • Hardness: 7.0.
  • Specific gravity: 3.26-3.41.
  • Price: 2p per gram. (S = 8p, M = 16p, L = 24p.)
A variable stone colour-wise Dumortierite can be pale blue with darker blue striations, to a deep midnight blue colour. It belongs to the silicate group of minerals.

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Eudialyte

  • Composition: sodium (calcium or iron or cerium or manganese) zirconium chlorohydroxysilicate. Na4(Ca,Fe,Ce,Mn)2ZrSi6O16(OH,Cl)
  • Hardness: 5.5.
  • Specific gravity: 2.8.
  • Price: 13p per gram. (S = 52p, M = £1.04, L = £1.56.)
A rare, pretty mineral from Russia with complex chemistry. Eudialyte appears as dark red crystals among a grey/black sugary matrix of host rock.

Fluorite

Fluorite

  • Composition: calcium fluoride. CaF2.
  • Hardness: 4.00.
  • Specific gravity: 3.00-3.25.
  • Price: 6p per gram. (S = 24p, M = 48p, L = 72p.)
Fluorite is a highly variable mineral and can range from colourless and clear, to white, cloudy and purple. In between it can take on yellow, green, blue and purple, often within even a small piece of stone.

Fosilised Wood

Fossilised wood

  • Composition: silicon dioxide (silica). SiO2.
  • Hardness: 7.0.
  • Specific gravity: 2.65.
  • Price: 3p per gram. (S = 12p, M = 24p, L = 36p.)
Fossilised Wood has several other names: Petrified Wood, Silicified Wood, and Hornstone. This stone is formed when water dissolves the organic matter of the original wood and then replaces it with mineral matter, usually chalcedony.

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Garnet
Garnet forms a small group of minerals which in turn belong to the silicate group. The metal content makes different combinations with silica and this causes many variations in colour. It is worth listing some of the differences that occur here...


Almandine Garnet

Garnet, Almandine

  • Composition: iron aluminium silicate. Fe3Al2(SiO4)3.
  • Hardness: 6.5-7.5
  • Specific gravity: 3.4-4.6.
  • Alternative names: Common Garnet, Carbuncle.
  • Birthstone: January.
  • Price: 6p per gram. (S = 24p, M = 48p, L = 72p.)
Garnet is a small group of minerals with several members and colours. Almandine Garnet is deep red to red/brown and although translucent the density of colour often renders the stone opaque.

Rhodolite Garnet

Garnet, Rhodolite

  • Composition: magnesium aluminium silicate. Mg3Al2(SiO4)3.
  • Hardness: 6.5-7.5.
  • Specific gravity: 3.4-4.6.
  • Alternative names: Bohemian Garnet, Carbuncle, Cape Ruby, Pyrope.
  • Price: 5p per gram. (S = 20p, M = 40p, L = 60p.)
Rhodolite is another member of the Garnet group, part of the Pyrope family. Reddish brown in colour, similar appearance to Almandine Garnet it can appear almost indistinguishable from other red garnets.

Goldstone

Goldstone is a totally artificial stone. Essentially it is opaque stained glass mixed with fine copper flecks.

Blue Goldstone

Goldstone, Blue

  • Price: 2p per gram. (S = 8p, M = 16p, L = 24p.)
Deep blue/grey glass with copper speckles.

Brown Goldstone

Goldstone, Brown

  • Price: 2p per gram. (S = 8p, M = 16p, L = 24p.)
Brown glass with copper speckles.

Hematite

Hematite

  • Composition: iron oxide. Fe2O3.
  • Hardness: 6.5.
  • Specific gravity: 5.20.
  • Price: 2p per gram. (S = 8p, M = 16p, L = 24p.)
Hematite hardly seems like a stone at all, more like a metal, indeed its iron content is very high, such that it is used as an ore. One look (and feel) of this mineral and you'll see why. In truth, hematite sold by that name is usually the mineral reformed so as to take on a more pleasing appearance. Some vendors call this reformed mineral 'hematine' although it is still known as hematite.

Hickoryite (or Hickorite)

  • Price: 2p per gram. (S = 8p, M = 16p, L = 24p.)
Hickoryite is a non-recognised name for a Jasper that comes from the U.S., similar to Mookaite and other Jaspers it is hard and fine grained. Hickoryite takes on a series of pastel shades of creams, greys, and browns. Some stones look like small pieces of toffee or caramel.

Howlite

Howlite is naturally white in colour but is one of many stones that will readily take on a dye. This, in combination with Howlite often having dark grey veins, and its resemblance to Turquoise, means that it is often dyed blue to make an imitation Turquoise. Other colour dyes are used to make imitation stones of other colours. Despite the stone's relative softness it still takes a good polish.

Blue Howlite

Howlite, Blue

  • Price: 2p per gram. (S = 8p, M = 16p, L = 24p.)
Howlite dyed bright blue.

White Howlite

Howlite, White

  • Price: 2p per gram. (S = 8p, M = 16p, L = 24p.)
Natural Howlite, white with pale grey streaks.

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Iolite

Iolite (B)

  • Composition: magnesium iron aluminium silicate. (Mg,Fe)2Al4Si5O18.
  • Hardness: 7.0
  • Specific gravity: 2.6-2.8.
  • Alternative names: Cordierite, Vikings Compass, Water Sapphire.
  • Price: 5p per gram. (S = 20p, M = 40p, L = 60p.)
Cordierite forms a small family of minerals, the cloudy violet/smoky blue variety is called Iolite.

Nephrite Jade

Jade, Nephrite

  • Composition: fluorohydroxy calcium (magnesium iron) silicate. Ca2(Mg,Fe)5Si8O22(OH,F)2.
  • Hardness: 5.0-6.0
  • Specific gravity: 3.0-3.4.
  • Alternative names: Greenstone, Nephrite, Maori stone.
  • Price: 6p per gram. (S = 24p, M = 48p, L = 72p.)
A member of the Tremolite-Actinolite series of minerals, the iron content of Actinolite imparts a dark green colour to the variety Nephrite, the common form of Jade.

Serpentine Jade

Jade, Serpentine

  • Alternative names: Bowenite, New Jade.
  • Composition: hydrated magnesium silicate. Mg3Si2O5(OH)4.
  • Hardness: 2.5-3.5.
  • Specific gravity: 2.5-2.6.
  • Price: 2p per gram. (S = 8p, M = 16p, L = 24p.)
This variety of Jade belongs to the Serpentine group of minerals and a variety of Antigorite provides this pale green stone.

Jasper

Jasper belongs to the quartz family of minerals. Opaque, microcrystalline silica is called Jasper. Since it occurs in many locations and alongside other minerals it appears in a great variety of forms.

Brown Jasper

Jasper, Brown

  • Price: 2p per gram. (S = 8p, M = 16p, L = 24p.)
A light brown/tan coloured Jasper close in colouration to Yellow Jasper. It is also sometimes referred to as Brown Chalcedony.

Dalmation Jasper

Jasper, Dalmation

  • Price: 2p per gram. (S = 8p, M = 16p, L = 24p.)
A white/cream coloured jasper with brown/black spots.

Green Jasper

Jasper, Green

  • Alternative names: Bloodstone, Heliotrope, Prase.
  • Price: 2p per gram. (S = 8p, M = 16p, L = 24p.)
A lustrous, hard jasper with a deep green colour, often flecked with red spots.

Ocean Jasper

Jasper, Ocean

  • Price: 3p per gram. (S = 12p, M = 24p, L = 36p.)
Ocean Jasper is sometimes called Orbicular Rhyolite but despite the confusing names in is nonetheless an interesting stone. For one thing it takes a nice polish but this is second place to its splendid appearance with multiple earthy colours, spots, swirls, and bands.

Picture Jasper

Jasper, Picture

  • Price: 2p per gram. (S = 8p, M = 16p, L = 24p.)
Picture Jasper is also known as 'Picture Stone' or 'Kalahari Picture Stone'. It is buff/cream in colour with brown/black lines and bands.

Red Jasper

Jasper, Red

  • Price: 2p per gram. (S = 8p, M = 16p, L = 24p.)
Red Jasper is a form of opaque chalcedony with a bright red colour due to iron oxide inclusions, sometimes finely veined with grey/black hematite, sometimes with white quartz as well.

Yellow Jasper

Jasper, Yellow

  • Price: 2p per gram. (S = 8p, M = 16p, L = 24p.)
A mottled yellow/brown Jasper.

Jet

  • Composition: carbonaceous rock. 75%-85% carbon, 5% hydrogen, 10% oxygen, 1% nitrogen.
  • Hardness: 2.0.
  • Specific gravity: 1.3.
  • Price: 45p per gram unpolished, 75p per gram polished.
Jet is a variety of bituminous coal, one of many results of the coalification of plant remains. Some curiousity arises since Jet is often found in isolated patches in sedimentary rock although it is identical in other respects to all 'young' coals. Its formation in patches, as opposed to the extensive deposits of coals in general, makes Jet an oddity. Jet is, well, Jet black and looks like pitch. Untreated it appears dull and drab but polished it can be made to take a shine to rival any stone.

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Labradorite 'A'

Labradorite

  • Composition: plagoiclase feldspar, a mixture of Albite (Na[AlSi3O8]) and Anorthite (Ca[Al2Si2O8]).
  • Hardness: 6.0-6.5.
  • Specific gravity: 2.61-2.77.
  • Price: 8p per gram. (S = 32p, M = 64p, L = 96p.)
A member of the feldspar group, Labradorite initially appears as a grey crystalline rock. However, due to the alignment of the crystals an interesting play of light called 'schillerisation' takes place. Cut and polished Labradorite is a popular stone for jewellery, ornaments and collectors and when seen and lit correctly appears to glow blue/green, sometimes yellow/gold. A variety of Labradorite, Spectrolite, looks similar but shows all colours when polished and lit well.

Lapis Lazuli

Lapis Lazuli

  • Composition: lazurite. (Plus [calcite], [pyrite]). (Na, Ca)7-8(Al, Si)12(O, S)24(SO4Cl, OH)2 [CaCO3], [Fe2S2].
  • Hardness: 5.0-5.5.
  • Specific gravity: 2.40.
  • Birthstone: September (as an alternative to Sapphire or Sodalite).
  • Price: 12p per gram. (S = 48p, M = 96p, L = £1.44.)
Lapis Lazuli is a highly valued stone that is really a mixture of several minerals. An altered form of limestone, Lapis is usually associated with calcite and pyrite. A powdered form of lazulite was formerly used as a pigment to make the colour ultramarine and Lapis has a strong blue colour almost unrivalled by any other stone.

Leopardskin Rhyolite

Leopardskin rhyolite

  • Composition: Quartz, Feldspar
  • Hardness: 6.0-7.0
  • Specific gravity: 2.2-2.6.
  • Price: 2p per gram. (S = 8p, M = 16p, L = 24p.)
Rhyolite is a silica-rich volcanic rock, undistinguished in its plainest forms. Coming from Mexico, Leopardskin Rhyolite is an exception to this and once seen it is evident that this is an appropriately named stone. The main overtone is that of light browns but the spots, bands, and swirls take on complex patterns with many other colours mixed in with the exception of blue and green. It seems that no two pieces of this stone appear alike.

Lepidolite

Lepidolite (B)

  • Composition: potassium lithium aluminium fluorohydroxy silicate. KLi2Al[(F,OH)2,Si4O10.
  • Hardness: 2.0-3.0.
  • Specific gravity: 2.8-2.9.
  • Price: 5p per gram. (S = 20p, M = 40p, L = 60p.)
Yet another member of the silicate group Lepidolite is noted for its lilac colour and sugary appearance.

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Malachite

Malachite

  • Composition: copper hydroxycarbonate. Cu2CO3(OH)2.
  • Hardness: 3.5-4.0.
  • Specific gravity: 3.90.
  • Price: 6p per gram. (S = 24p, M = 48p, L = 72p.)
Malachite needs little introduction. A well known and highly valued mineral with a colour and appearance that once seen is not easy to forget. Bottle green colour and banding make this opaque mineral a visual treat. It is also notable for its weight, having a high specific gravity.

Mangano Calcite

Mangano Calcite

  • Composition: calcium carbonate. CaCO3.
  • Hardness: 3.0
  • Specific gravity: 2.6-2.8.
  • Price: 6p per gram. (S = 24p, M = 48p, L = 72p.)
Of all minerals Calcite forms the richest variety, over 100 different forms with over 1000 combinations. Calcite crystals always grow on a surface or some kind while massive (microcrystalline) varieties can occur almost anywhere. Since Calcite easily dissolves and can form/reform readily it often does so in combination with other compounds. In the case of Mangano Calcite the calcite is infused with manganese compounds lending a pale pink hue with bands to an almost pure white calcite.

Merlinite

Merlinite

  • Composition: silicon dioxide (silica). SiO2.
  • Hardness: 7.0.
  • Specific gravity: 2.65.
  • Alternative names: Dendritic Agate, Tree stone, Mocha stone.
  • Price: 6p per gram. (S = 24p, M = 48p, L = 72p.)
Merlinite is a transparent to semi-opaque white chalcedony which has inclusions called dentrites. These are tree/fern-like iron/manganese inclusions that grow within the chalcedony, making for some interesting patterns.

Mookaite

Mookaite

  • Composition: silicon dioxide (silica). SiO2.
  • Hardness: 7.0.
  • Specific gravity: 2.65.
  • Price: 2p per gram. (S = 8p, M = 16p, L = 24p.)
Mookaite comes from Australia, source of many fascinating minerals. One alternative name for Mookaite is Australian Jasper. It generally takes an excellent polish and three main colours: Maroon, Yellow, and light brown/cream, sometimes all next to each other.

Mugglestone

Mugglestone

  • Composition: silicon dioxide (silica). SiO2.
  • Hardness: 7.0.
  • Specific gravity: 2.65.
  • Price: 3p per gram. (S = 12p, M = 24p, L = 36p.)
A mixed stone, Mugglestone is a blend of banded earthy coloured jaspers and hematite, close in appearance to Jasper Iron.

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Obsidian

Obsidian is a highly varied stone, a volcanic glass, essentially a rapidly cooled lava with a high silica content. Like Flint, it too has an ancient association with mankind and Obsidian was used to make sharp tools since it produces very sharp, hard splinters when broken.

Black Obsidian

Obsidian, Black

  • Price: 2p per gram. (S = 8p, M = 16p, L = 24p.)
A pure lustrous black stone.

Mahogany Obsidian

Obsidian, Mahogany

  • Price: 2p per gram. (S = 8p, M = 16p, L = 24p.)
A brown Obsidian with flecks and stripes of black.

Rainbow Obsidian

Obsidian, Rainbow

  • Price: 12p per gram. (S = 48p, M = 96p, L = £1.44.)
What appears to be a black, silky stone but when well lit shows a colourful play of light.

Snowflake Obsidian

Obsidian, Snowflake

  • Price: 2p per gram. (S = 8p, M = 16p, L = 24p.)
A black Obsidian speckled and flecked with grey/white streaks and spots that look like snowflakes.

Black Banded Onyx

Onyx, Black banded

  • Composition: silicon dioxide (silica). SiO2.
  • Hardness: 7.0.
  • Specific gravity: 2.65.
  • Price: 2p per gram. (S = 8p, M = 16p, L = 24p.)
Onyx is generally an opaque, sombre black jasper. But, like Sardonxy, this chalcedony forms in parallel banded masses with various stripes of black, clear, and white.

Pietersite

Pietersite

  • Composition: silicon dioxide (silica). SiO2.
  • Hardness: 7.0.
  • Specific gravity: 2.65.
  • Price: 8p per gram. (S = 32p, M = 64p, L = 96p.)
Pietersite is an unusual mineral of remarkable appearance. In reality it is a simple silicate and a form of Tigers Eye. But, with Pietersite the Tigers Eye has been broken and reformed naturally so that the fibrous appearance of gold and red, sometimes blue, Tigers Eye is randomly arranged.

Pyrite

Pyrite

  • Composition: iron sulphide. FeS2.
  • Hardness: 6.0-6.5.
  • Specific gravity: 4.80-5.10.
  • Alternative names: Fools gold.
  • Price: 10p per gram. (S = 40p, M = 80p, L = £1.20.)
Pyrite, also known as Iron Pyrite is another stone of remarkable appearance. Once seen it is not difficult to see why it is also known as 'Fools Gold'. That said, it often contains trace amounts of copper and gold.

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Quartz

Quartz is one of the commonest minerals in Earth's crust, appearing everywhere and in a bewildering variety of guises. Pure quartz is naturally clear and crystalline but since quartz forms in so many places and in proximity to other minerals it goes on to form myriad varieties...

Quartz with Chlorite

Quartz, with Chlorite

  • Alternative names: Lodolite.
  • Price: 5p per gram. (S = 20p, M = 40p, L = 60p.)
A clear quartz with inclusions of tiny greenish/black Chlorite crystals.

Clear Quartz

Quartz, Clear

  • Alternative names: Rock Crystal.
  • Birthstone: April (as an alternative to Diamond).
  • Price: 2p per gram. (S = 8p, M = 16p, L = 24p.)
Clear and glass-like in appearance Rock Crystal shows up as huge masses or a variety of crystal forms, some several metres in size and weighing several tonnes.

Rose Quartz 'A'

Quartz, Rose (A)

  • Price: 6p per gram. (S = 24p, M = 48p, L = 72p.)
One of the best known quartzes, this pink variety of quartz has been naturally stained with manganese compounds. The 'A' grade is the best quality variety of Rose Quartz with a deeper hue of pink than the 'B' grade as well as a high grade polish.

Rose Quartz 'B'

Quartz, Rose, Pale (B)

  • Price: 2p per gram. (S = 8p, M = 16p, L = 24p.)
The same as that above but a paler colour.

Rutillated Quartz

Quartz, Rutillated (B)

  • Alternative names: Angel Hair, Sagenite.
  • Price: 3p per gram. (S = 12p, M = 24p, L = 36p.)
A clear quartz with fine intergrowths or inclusions of Rutile (titanium oxide) needle-like crystals, often imparting a golden colour to the quartz.

Smoky Quartz

Quartz, Smoky

  • Alternative names: Morion.
  • Price: 2p per gram. (S = 8p, M = 16p, L = 24p.)
A clear quartz but with a black/brown tint. Dark black Smoky Quartz is called Morion.

Snow Quartz

Quartz, Snow

  • Alternative names: White Quartz, Milky Quartz, White Aventurine.
  • Price: 2p per gram. (S = 8p, M = 16p, L = 24p.)
A white semi-transparent to opaque variety of quartz.

Tourmalinated Quartz

Quartz, Tourmalinated

  • Price: 6p per gram. (S = 24p, M = 48p, L = 72p.)
A clear or white quartz with inclusions of black tourmaline crystals.

Rhodochrosite

Rhodochrosite

  • Composition: manganese carbonate. MnCO3.
  • Hardness: 3.5-4.0.
  • Specific gravity: 3.3-3.6.
  • Alternative names: Manganese spar, Himbeerspat, Raspberry spar.
  • Price: 12p per gram. (S = 48p, M = 96p, L = £1.44.)
Rhodochrosite is a mineral that has been mined and used for jewellery for hundreds of years. It has an almost unique appearance and colour, rose red to pink, with white in radiating circular patterns.

Rhodonite

Rhodonite

  • Composition: manganese iron magnesium calcium silicate. (Mn2+, Fe2+, Mg, Ca) SiO3.
  • Hardness: 6.0.
  • Specific gravity: 3.60.
  • Price: 2p per gram. (S = 8p, M = 16p, L = 24p.)
Rhodonite is an opaque silicate with a distinct appearance, yet another mineral that owes is colouration to managanese compounds. It ranges from pale pink to raspberry colour with contrasting black marks and has a sugary appearance.

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Sardonyx

Sardonyx

  • Composition: silicon dioxide (silica). SiO2.
  • Hardness: 7.0.
  • Specific gravity: 2.65.
  • Price: 2p per gram. (S = 8p, M = 16p, L = 24p.)
Sard is an orange/brown variety of chalcedony, close in appearance to Carnelian. Sard often forms in parallel banded masses with various stripes of orange, brown, clear, and white. The varied forms of silica give rise to an amazing variety of stones and where chalcedony forms with such bands and colours Sardonyx is the result.

Selenite

Selenite

  • Composition: hydrated calcium sulphate. CaSO4.2H2O.
  • Hardness: 1.5-2.0.
  • Specific gravity: 2.2-2.4.
  • Alternative names: Gypsum, Satin Spar.
  • Price: 2p per gram. (S = 8p, M = 16p, L = 24p.)
Chances are you are never far from this mineral, Gypsum is one of the main constituents of plaster. The silky appearance, parallel fibrous white variety is known as Selenite. It is a very soft mineral and soluble in water.

Shattuchite

Shattuchite

  • Composition: similar to Ajoite: hydrated potassium, sodium copper aluminium silicate. (K,Na)Cu7AlSi9O24(OH)6.3H2O.
  • Hardness: Indeterminate.
  • Specific gravity: 3.0.
  • Price: 10p per gram. (S = 40p, M = 80p, L = £1.20.)
Shattuchite, often associated with Ajoite, bears the hallmarks of copper bearing minerals - green/blue colouration and softness, making the mineral difficult to polish. It is often naturally fused into quartz and a blue/green with streaks of brown in white quartz makes for an attractive stone.

Sodalite

Sodalite

  • Composition: sodium aluminium silicate. Na8Al6Si6O24Cl2.
  • Hardness: 5.5.
  • Specific gravity: 2.13-2.29.
  • Birthstone: September (as an alternative to Sapphire or Lapis Lazuli).
  • Price: 2p per gram. (S = 8p, M = 16p, L = 24p.)
Sodalite is one of the best known polished semi-precious stones, notable for its lustrous deep blue colour and marble-like appearance.

Sugilite

Sugilite

  • Composition: potassium sodium (iron, manganese, aluminium) lithium silicate. KNa2(Fe,Mn,Al)2Li3Si12O30
  • Hardness: 6.0-6.5.
  • Specific gravity: 2.7.
  • Alternative names: Luvulite.
  • Price: 12p per gram. (S = 48p, M = 96p, L = £1.44.)
A rare, complex and exceptionally pretty, opaque mineral. Sugilite is found in very few places with South Africa being the primary source. It is named after the Japanese geologist Sugi who first described the mineral in Japan. The basic colour is a vivid purple but examples of Sugilite often contain red, brown and black in complex patterns. Occasionally white and blue appear within the purple.

Sunstone

Sunstone (B)

  • Composition: plagoiclase feldspar, a mixture of Albite (Na[AlSi3O8]) and Anorthite (Ca[Al2Si2O8]).
  • Hardness: 6.0-6.5.
  • Specific gravity: 2.61-2.77.
  • Alternative names: Aventurine feldspar, Aventurine, Orange feldspar.
  • Price: 6p per gram. (S = 24p, M = 48p, L = 72p.)
The feldspar group of minerals make a large family of crystals. Sunstone is one of the prettier varieties with a warm orange glittery appearance. Another member of the feldspar group is Labradorite.

Thulite

Thulite

  • Composition: calcium aluminium hydroxysilicate. Ca2Al3(SiO4)3(OH).
  • Hardness: 6.5.
  • Specific gravity: 3.35.
  • Price: 6p per gram. (S = 24p, M = 48p, L = 72p.)
Zoisite is a rock which forms in several manners. Pink, massive varieties of Zoisite are called Thulite. The pink colouration comes from inclusions of manganese and Thulite often has an glittery, sugary appearance. (The blue, gem variety of zoisite is Tanzanite.) This variety of Thulite comes from Norway.

Tigers Eye

One of the best known and popular polished stones, Tigers Eye is magnificent when cut and polished in almost any form. Tigers Eye is a fibrous opaque quartz with a silky appearance and takes on three main forms. A fourth variety, a mixture of colours is know as variegated Tigers Eye. Tigers Eye is derived from silicified forms of Crocidolite (a variety of asbestos) although Tigers Eye itself is not hazardous to health!

Blue Tigers Eye

Tigers Eye, Blue

  • Price: 2p per gram. (S = 8p, M = 16p, L = 24p.)
Blue Tigers Eye is also known as 'Hawks Eye' or 'Falcons Eye'.

Gold Tigers Eye

Tigers Eye, Gold

  • Price: 2p per gram. (S = 8p, M = 16p, L = 24p.)
Gold Tigers Eye gets its colour from iron (limonite) inclusions.

Red Tigers Eye

Tigers Eye, Red

  • Price: 2p per gram. (S = 8p, M = 16p, L = 24p.)
Red Tigers Eye gets its colour from iron oxide inclusions.

Turitella Fossil Jasper

Turitella fossil jasper

  • Composition: silicon dioxide (silica). SiO2 plus organic remains.
  • Hardness: 6.0-7.0.
  • Specific gravity: 2.6-2.7.
  • Alternative names: Snakeskin Jasper, Fossil Jasper.
  • Price: 4p per gram. (S = 16p, M = 32p, L = 48p.)
A peculiar and fascinating stone: A dark brown/grey jasper cementing together the remains of the extinct marine mollusc Turrilites, an species of Ammonite from the Cretaceous era.

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Unakite

Unakite

  • Composition: calcium aluminium iron hydroxysilicate. Ca2(Al, Fe)3(SiO4)3(OH).
  • Hardness: 6.5.
  • Specific gravity: 3.40.
  • Price: 2p per gram. (S = 8p, M = 16p, L = 24p.)
Unakite is a green rock comprised of small fragments of epidote and feldspar. Unakite is noted for its peculiar appearance of lime green with pink/orange/brown spots, a distinctive stone unlikely to be confused with anything else.

Verdite

  • Price: 2p per gram. (S = 8p, M = 16p, L = 24p.)
Verdite is a trade name for a vivid green variety of Fuchsite. It is part of the mica group of stones. Most micaceous stones are crumbly and flaky but Verdite is compact and fine grained, although soft. It is distinctive for its delicately patterned intense greens with yellows spots and white veins.

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HOW TO ORDER OR MAKE ENQUIRIES...
At the moment there is no 'on-line' purchasing, but the form below does allow you to make a selection(s) and when you press the 'Send' button the form is e-mailed to me. I then, in turn, will contact you (assuming you correctly fill out the form and enter a valid e-mail address) to confirm that I have received your order. From there on I can tell you the availability of what you want, how much it will cost, arrange payment, and tell you when it should be with you. You can use this form any number of times for multiple requests but if you wish you may use the 'Comments' area to write down what you want and then post your order.

So, to make an order, fill in the first part of the form (name, address etc.). Then make a selection from the drop down list of stones. Select the weight, quantity, and any comments you may have.

Check that all entries you've made are correct and then hit the 'Send' button. That's all there is to it!

If you wish to clear all the entries in the form because you've made a mistake press the 'Reset' button.

If you wish to make another selection leave the first part of the form as it is and use the drop down list to make another selection. Do this as many times as you like if there are several types of stone you want.

Alternatively, just fill in the first part of the form with you name, address etc and then write down your request in the 'Comments' section. This may be useful or quicker if there are lots of different stones you want or if you request is complicated...

TUMBLESTONE ORDER FORM

Full Name:
House number/name, Street name:
Area/District:
Town/City:
County/Region/State:
Country (if outside of the UK):
Postcode/Zipcode:
Phone number and area code:
E-mail address:

Stone type

Size/weight (Other Size/weight)

Quantity (Other quantity)

Please enter any comments, questions or notes you want to append to this form in the space below.

Please make sure that ALL of your entries in the form are correctly entered.

Don't forget to include full contact details for your order - if I cannot contact you, you will not get your order!

If you are NOT happy with your entry(s) or have made an error edit the form as required.
(Alternatively press the Reset and clear this form button below and start again.)

If you have completed the form and want to go ahead and order press the Send this form now button below and your order will be sent.

! ! ! Please make sure your contact details are correctly entered before sending this form. ! ! !

If you wish to make another selection leave the first part of the form (Name, Address etc) as it is.
Make another selection using the Stone Type, Size/Weight, and Quantity lists and press the Send this form now button below again and your next order will be sent.

Thank you for your order!


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