Regular Specimen Range

Regular Specimen Range

We offer secure on-line payment accepting most cards - via Worldpay or PayPal. Ordering is quick and easy, with orders received before 1.00 p.m. being despatched the same day.

Online Catalogue | Minerals and Fossils | Mineral Specimens | Regular Specimen Range

Herkimer Diamond Double Terminated Quartz USA

Ref: HERK10mm

Quartz, which is the most abundant silica mineral and which occurs in most igneous and practically all metamorphic and sedimentary rocks, is nearly pure silicon dioxide. The name quartz is believed to have originated in the early 1500s from the Saxon word querklufterz (cross-vein ore), which was corrupted to quererz and then to quartz. Quartz was well known to the ancients, who called it crystal or ROCK CRYSTAL.
Quartz is colorless and transparent when pure. Its hardness is 7 on the Mohs scale.
This crystal (also known as Herkimer Diamond -after Herkimer County, New York, where they are found ) exhibits clarity with natural smooth faces in a double-terminated configuration and is prized by collectors throughout the world. Size about 10-15mm.

Price per crystal£8.29
£9.95 Including VAT at 20%

Please insert Quantity:

Poilshed block of Peruvian Stromatolite. Average 3-4cms (carded)

Desert Rose Sand Selenite Morocco 1.38Kgs

Natural Hexagonal burgundy RUBY crystal ~2.0cms (carded)

Native Copper ~3cms Michigan USA (carded)

Ref: 23-726

Two kinds of copper ore are commonly mined: chalcopyrite and bornite: occasionally the metal is found in it's pure or 'native' state like this specimen. Copper ore is found throughout the world and Zaire is renowned as a source, but the low percentage of metal obtained from the ore and the often hard-to-access location of deposits make many potential mines uneconomic.
Copper is the second most-used metal in the world and is valued for its conductivity (for electrical cable) malleability, resistance to corrosion, and beauty. Copper was mined in Cheshire (Alderley Edge) and in Anglesey (Parys Mountain) before the turn of the century.
As these are natural (cleaned) specimens each will vary from the illustration but be similar in size (approx 3cms).

Price:£2.46
£2.95 Including VAT at 20%

Please insert Quantity:

People who bought this item also bought:

1. Specular Hematite with Rutile from Brazil ~2cms (Ref: 23-772)

2. ARAGONITE 'Sputnik' Crystal cluster Approx 4.5cms (Ref: 23-703)

Hematite Boriodal Kidney Ore ~2.5cms Morocco

Ref: 23-770

Natural specimens of gem-quality Hematite, from Morocco, with a botriodal (nodular) feature surface that has been enhanced by polishing to show the steel grey-black characteristic of this iron ore. The crystals and coarse-grained varieties have a brilliant metallic lustre and are known as specular iron ore or looking-glass ore. They are used as intaglios in signet rings. Thin scaly types are called micaceous hematite. Much hematite occurs in a soft, fine-grained, earthy form called red ochre or ruddle. Intermediate between these types are compact varieties, often with a reniform surface (kidney ore) or a fibrous structure (pencil ore). Red ochre is used as a pigment in paints and crayons and a purified form (rouge) is used to polish plate glass and jewellery. Average weight of this specimen is 25gms and size about 2.5cms.

Price per piece:£1.23
£1.48 Including VAT at 20%

Please insert Quantity:

People who bought this item also bought:

1. Native Copper ~3cms Michigan USA (carded) (Ref: 23-726)

2. Specular Hematite with Rutile from Brazil ~2cms (Ref: 23-772)

FUCHSITE Mica specimen (Brazil) (100gms)

Bornite & Chalcopyrite Peacock Ore (Carded)

ULEXITE T-V Stone ~2-3cms smoothed faces. (carded)

Ref: 23-900

Ulexite - or ‘T-V Stone’ as it is more commonly known - is a Borate exhibiting image transmission properties due to its tightly packed clear ‘light guide’ crystal fibre composition. Most borates are slightly soluble in water and therefore occur in marine evaporate deposits or in desert basins such as Death Valley in the USA.
ULEXITE is mined from lake deposits in Argentina.
Borax is used as a cleanser, as a flux in the
manufacture of glass and ceramic glazes,
and as a soldering flux. Boric acid is used
as a mild antiseptic and food preservative.The (average 2-3cms) specimen is supplied on a descriptive card.

Price:£1.23
£1.48 Including VAT at 20%

Please insert Quantity:

People who bought this item also bought:

1. Native Copper ~3cms Michigan USA (carded) (Ref: 23-726)

Specular Hematite with Rutile from Brazil ~2cms

Ref: 23-772

A black or grey variety of hematite with brilliant metallic luster, occurring in micaceous or foliated masses, or in tabular or disk-like crystals. Also known as grey hematite; iron glance; specular iron.
TiO2, Titanium Oxide. Rutile is an ore of titanium, used for high tech alloys due to it being light weight, high strength and resistance to corrosion. Rutile is also very popular in the gemstone markets as it forms beautiful specimens when included in clear quartz and is known as 'venus-hair stone'. This specimen of Specular Hematite has radiating needles of gold Rutile crystals growing epitaxially. Average specimen size 2cms - appearance will vary from that illustrated as these are all natural specimens.

Price:£2.51
£3.01 Including VAT at 20%

Please insert Quantity:

People who bought this item also bought:

1. ARAGONITE 'Sputnik' Crystal cluster Approx 4.5cms (Ref: 23-703)

2. Native Copper ~3cms Michigan USA (carded) (Ref: 23-726)

Pink Tourmaline (Rubellite) crystal average 10-15mm (carded)

Ref: PinkTour

Red to dark pink Tourmaline is sometimes called Rubellite. This specimen, from Brazil, is not of gem-cutting quality; hence the low price.
When pink tourmaline is found in the centre of crystals, surrounded by green colour, they are known as 'watermelon' tourmaline. Tourmaline is a complex silicate whose chemical composition variations account for the wide range of colours.
Tourmaline is said to symbolize friendship, compassion and humanitarianism: It is the birthstone for October and the gemstone for the 8th Wedding Anniversary.
N.B. Several crystal pieces are illustrated to show natural product variation.

Price per crystal:£1.23
£1.48 Including VAT at 20%

Please insert Quantity:

People who bought this item also bought:

1. Ruby in Zoisite rough 3-4cms (carded) (Ref: 23-873)

2. KYANITE Green Crystal average 2-4cms(carded) (Ref: KyaniteGreen)

Dravite Tourmaline Crystal (India) Carded

Ref: DraviteXtl

Tourmalines are a widespread and abundant complex boron & aluminium SILICATE material. They form slender, three-, six-, or nine-sided prismatic crystals (hexagonal system) in parallel or radiating groups.

The alkali tourmalines, which contain sodium, potassium or lithium, are pink (rubellite), green (Brazilian 'emerald'), or colourless
(achroite), whereas magnesium tourmaline is yellow-brown to brownish black (dravite), and iron tourmaline is deep black (schorl).

Tourmaline is the BIRTHSTONE for OCTOBER.

Each crystal measures approx 2cms in length and is supplied on a descriptive card.

Price per Crystal:£2.51
£3.01 Including VAT at 20%

Please insert Quantity:

People who bought this item also bought:

1. ARAGONITE 'Sputnik' Crystal cluster Approx 4.5cms (Ref: 23-703)

2. Specular Hematite with Rutile from Brazil ~2cms (Ref: 23-772)

Magnetite Lodestone ~2cms Utah USA (carded)

Ref: 23-818

Lodestone (or loadstone) refers to Magnetite (specimen here is with iron filings or a button magnet), a magnetic mineral form of iron. A piece of intensely magnetic magnetite was used as an early form of magnetic compass.
Iron, steel and ordinary magnetite are attracted to a magnetic field, including the Earth’s magnetic field. Only magnetite with a particular crystalline structure can act as a natural magnet and attract and magnetize iron. The name 'magnet' comes from lodestones found in a place called Magnesia in Greece. This specimen is from WahWah, Utah, USA.

Price per piece:£1.23
£1.48 Including VAT at 20%

Please insert Quantity:

People who bought this item also bought:

1. Pink Tourmaline (Rubellite) crystal average 10-15mm (carded) (Ref: PinkTour)

2. ROCK CRYSTAL Point. Pendant. Gilt Plated (Ref: 43-147)

BISMUTH Lab-grown Xtl. Carded 1-2cms

Ref: 23-709

Bismuth is the most diamagnetic of all metals (i.e.,opposition to being magnetized) It is hard, brittle, lustrous, and coarsely crystalline. Bismuth is frequently associated with ores of tin, lead, or copper . It expands slightly upon solidifying, rendering bismuth alloys particularly suited to the manufacture of sharply detailed metal castings. With a low melting point, Bismuth alloys are used in special solders as well as in automatic sprinkler heads, fire-door release lines, fuses, safety plugs for compressed-gas cylinders, and many other fire-detection devices. The oxychloride BiOCl has been used to impart a pearlescent quality to lipstick, nail polish, and eye shadow.

Price:£2.09
£2.51 Including VAT at 20%

Please insert Quantity:

People who bought this item also bought:

1. Ruby Star polished crystal ~2-3cms India (carded) (Ref: 23-869)

2. Hematite Boriodal Kidney Ore ~2.5cms Morocco (Ref: 23-770)

AQUA-AURA Single Xtl. (Carded 3-4cms slim)

Rainbow Quartz (Single Crystal 3-4cms x 1cm)

TANZANITE Tumbled 10-15mm Crystal pendant (carded)

Ref: TanzanTumblPend

Discovered in The Merelani Hills area of Tanzania in the late 1960's, this much prized blue/purple zoisite was named by Tiffany & Co of New York who launched it to the world market in 1969.
Recent improvements to mining techniques and relaxation of 'red tape' has made the stone more accessible to the market in recent years although clean large stones are rare and very expensive.
The stone is predominantly brown/bronze in rough form but can be altered to a beautiful velvety blue by heat treatment. The colour is enhanced by its natural trichoic property showing different colours in different directions along the crystal.
This small (10-15mm average) tumbled gem has been drilled on the top and an up-eye fitted with a 'fleur-de-lys' style spring bail suitable for use with a fine base-metal chain or cord (not included). Three pendants illustrated to show product variation.

Price per tumbled pendant:£5.79
£6.95 Including VAT at 20%

Please insert Quantity:

CITRINE Hex All-polished Xtl (Priced per 100gms)

TEKTITE (Hunan China) ~2-4cms (Carded)

Ref: 23-890

This tektite was said to be from Hunan, an inland province in southeast China, situated adjacent (north and northwest of) Guangdong. Tektites appear to be glassy bodies formed from sediments melted during large terrestrial impact events. Many but not all exhibit tubular to button-shaped forms, often with tiny surface ridges or bubbles, the overall shape consistent with a glass cooling and solidifying during its brief atmospheric passage during “re-entry”. Because they are largely glass, possible sources of mistaken identity include glassy volcanic rocks (e.g., obsidian), slags and other industrial by-products, and waterworn bottle glass recovered on beaches.

Price per Tektite:£1.23
£1.48 Including VAT at 20%

Please insert Quantity:

People who bought this item also bought:

1. Specular Hematite with Rutile from Brazil ~2cms (Ref: 23-772)

2. ARAGONITE 'Sputnik' Crystal cluster Approx 4.5cms (Ref: 23-703)

TEKTITE - MOLDAVITE specimen avge 9cts 15mm (carded)

Iron Pyrite Crystal on matrix 23-854

Ref: PyriteMatrix

A well defined, natural (unpolished), crystal from a classic collectors location in Navajun, Spain.
Iron Pyrite is sometimes called 'Fools Gold' due to its metallic gold sheen appearance but gold is not found in such precise crystal form and usually has a deeper yellow colour and is much more dense.
As these are natural specimens they will vary from that illustrated but will generally have at least one cubic crystal of about the size chosen.
We also supply loose single crystals of various sizes - see below in this section.

Priced from:£10.17
£12.20 Including VAT at 20%

Please insert Quantity:

Please select size required from the drop-down list..

Click here to see a boxed specimen

People who bought this item also bought:

1. Native Copper ~3cms Michigan USA (carded) (Ref: 23-726)

2. Botriodal polished Hematite specimen (Ref: HematBotr)

AGATE NODULE Half 5-10cms nat. (Priced per Kg)

AGATE NODULE Half 6-14cms Sawn (Price/Kg)

AGATE NODULE Half on Wood base (Price/Kg)

QUARTZ Xtl Needles 2-4cms (Pack of 250gms)

KYANITE Green Crystal average 2-4cms(carded)

Ref: KyaniteGreen

The aluminium SILICATE mineral, Kyanite (derived from the Greek 'kyanos' meaning 'blue') is used in the manufacture of spark plugs, porcelain and other refractories; it has the same chemical composition as ANDALUSITE and SILLIMANITE. It's long-bladed - (usually blue; like this one from Brazil) crystals (triclinic system) are distinctive. Hardness is 4-5 along the length of the crystal and 6-7 across it, lustre is vitreous to pearly, specific gravity is 3.5-3.7 and cleavage is perfect in one direction.
Kyanite occurs in gneisses, schists and granite pegmatites: it is an indicator of deep-seated, regional metamorphism of clay-rich sediments and it often occurs with Garnet and Staurolite in crystalline schists.
The length of these crystals varies from about 2.0 - 4.0cms.
Crystals are predominently green.
Supplied with a descriptive card.

Price per Crystal:£2.51
£3.01 Including VAT at 20%

Please insert Quantity:

People who bought this item also bought:

1. Pink Tourmaline (Rubellite) crystal average 10-15mm (carded) (Ref: PinkTour)

Kyanite crystal Blue ~2-3cms Brazil (carded)

Ref: 23-797

Price per crystal£1.23
£1.48 Including VAT at 20%

Please insert Quantity:

People who bought this item also bought:

1. Staurolite Crystal ~2cms ('B' Grade) France (carded) (Ref: 23-876)

2. Amethyst Tumbled (Ref: Ameth)

Quartz Unpolished Crystal Single Point on Wood (Per Kg)

Quartz Unpolished Crystal Cluster on Wood (Per Kg)

Amethyst Bed A-Grade Sawn Uruguay (Priced/Kg

Amethyst Bed B-Grade Pol Sawn Urug(Priced/Kg)

Amethyst Bed A-Grade Pol Sawn Urug(Priced/Kg)

AMETHYST Bed on Wood Uruguay (Priced/Kg)

ICELAND SPA Calcite (Carded avge 3cms)

Ref: 23-779

The name 'Iceland Spar' relates to the clearest transparent 'crystals' of the common mineral 'Calcite'. The characteristic rhombohedral crystal shape is clearly shown in this 'cleaved' (split with a sharp blade) specimen. Exibiting the light transmission property of 'double-refraction' (bi-fringent), it will be seen that transmitted images (such as the line under this specimen) show a doubling which is particularly obvious if the crystal is rotated over the image.
Calcite usually forms as 'massive' blocks from which these rhombs can be cleaved or as 'nailhead' or 'dogtooth' crystals. This specimen is from Mexico. Average 3cms

Price:£3.79
£4.55 Including VAT at 20%

Please insert Quantity:

People who bought this item also bought:

1. Specular Hematite with Rutile from Brazil ~2cms (Ref: 23-772)

Ruby Star polished crystal ~2-3cms India (carded)

Ref: 23-869

Rubies are a form of corundum, which is the second hardest mineral after diamond. The most valued are clear, deep red - termed "pigeon's blood". Some rubies display a star when illuminated because of an effect called asterism. Asterism is caused by inclusions, which are needle-like extensions of other mineral crystals (such as rutile) trapped within the primary stone.This specimen is a natural red CORUNDUM crystal section which has been domed and polished to illustrate the ‘star’ effect which is visible under a point light source. This crystal is from Mysore in India.

Price per Crystal:£3.79
£4.55 Including VAT at 20%

Please insert Quantity:

People who bought this item also bought:

1. Specular Hematite with Rutile from Brazil ~2cms (Ref: 23-772)

2. Ruby in Zoisite rough 3-4cms (carded) (Ref: 23-873)

METEORITE Sikhote-Alin Fragment 2-3cms (Carded)

Ref: 23-822

This (Iron-Nickel) Meteorite is known as a 'fragment'. The original Sikhote-Alin 'shower' happened in Russia at 10.30 a.m. on the 12th February 1947 and is the largest known such fall and well documented. It is now estimated that over 100 tons of postatmospheric mass hit our planet at about 14.5Km/second. To date, it is believed that about 30 tons have been collected - the largest weighing 1,745Kg and the smallest less than a gram!
These 'fragments' litter the strew field and are the result of relatively large-mass objects shattering on impact with frozen ground.
Each specimen (will vary from that illustrated) measures about 2-3cms and is supplied on a descriptive card with the above information.

Price:£5.91
£7.09 Including VAT at 20%

Please insert Quantity:

People who bought this item also bought:

1. KYANITE Green Crystal average 2-4cms(carded) (Ref: KyaniteGreen)

METEORITE Campo del Cielo fragment ~1cms (Carded)

Ref: 23-824

Originally discovered in 1576 but thought to have fallen about 4000-6000 years ago. The ancient Indian name means 'Field of the sky or heaven'.
The meteorite is predominently Iron with 6.62% Nickel. It is a course Octahedrite with silicate inclusions.
In the 1770's a mass weighing about 14-18 tons was discovered and thought to be the original 'Meson de Fierro' named by the Spanish in 1576, but it was not excavated. There is speculation that the same mass was in the news in 1992 when an American Meteorite dealer negotiated a private purchase but was arrested by the Argentinian authorities when he tried to transport it. The mass remains in Argentina.
This fragment has been taken from a larger piece and tumble-cleaned. Average 1cms