Mineral Specimens

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Online Catalogue | MINERALS & FOSSILS Books, Specimens, Boxes & Display | Mineral Specimens

Selected Quality Specimens

Click on the image above for a section containing selected quality specimens with clear photographs.

New 'Carded' Mini Minerals display

Our smaller minerals and fossils are now supplied in attractive clear 'clam-shell' packaging with an appropriate descriptive card. The packaging is colour coded according to price - and therefore does not include the price; which is useful if you are purchasing as a gift for someone else ! A wide range is available in our store and the most popular items can be ordered on line through this site.

Fluorite cleaved 4cms octahedra Crystal (China)

Ref: FluoriteOct4

Large (average 40mm) cleaved octahedral crystals of predominently green Fluorite from China. Three crystals shown to illustrate natural product variation.
FLUORITE -also called FLUORSPAR, common halide mineral, calcium fluoride (CaF2). Fluorite occurs most commonly as a glassy, many-hued vein mineral and is often associated with lead and silver ores; it also occurs in cavities, in sedimentary rocks, in pegmatites, and in hot-springs areas. It is widespread throughout the world. Fluorite is used, amongst other things, as a flux in the manufacture of open-hearth steel. In the nineteenth century 'Blue John', a variety from Derbyshire, England, was widely used in ornamental vases and other objects. (See also our smaller crystals ref 23-736)

Price:£5.06
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People who bought this item also bought:
1. Dravite Tourmaline Crystal (India) (Ref: DraviteXtl)
2. ICELAND SPA Calcite (Carded avge 3cms) (Ref: 23-779)

Native Copper ore ~3cms from Michigan USA

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).

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People who bought this item also bought:
1. Specular Hematite with Rutile from Brazil ~2cms (Ref: 23-772)
2. Specimen Divided Cases (Ref: SpecCase)

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
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People who bought this item also bought:
1. Specimen Divided Cases (Ref: SpecCase)
2. Native Copper ore ~3cms from Michigan USA (Ref: 23-726)

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.

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People who bought this item also bought:
1. Gem Boxes (Ref: BoxGem)
2. GEM-POT Asstd. TUMBLED 2/XS (Ref: 32-100)

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.

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People who bought this item also bought:
1. Native Copper ore ~3cms from Michigan USA (Ref: 23-726)
2. Specimen Divided Cases (Ref: SpecCase)

Dravite Tourmaline Crystal (India)

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
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People who bought this item also bought:
1. CARNELIAN Agate tumbling rough. (100gms) (Ref: 20-031)
2. Specular Hematite with Rutile from Brazil ~2cms (Ref: 23-772)

Aragonite 2.5-3.0cms Hex Crystal with twinning

Ref: Aragonite

The first specimens to be described came from the Aragon region of Spain - hence the name. Aragonite is similar in composition to Calcite (calcium carbonate) but has a different crystal structure so it is said to be polymorphic.
These crystal specimens measure about 2.5-3.0cms and show the hexagonal crystal stucture - some with 'twinned' crystals. Ball-like clusters with many radiating twin crystals are sometimes referred to as 'sputniks'.
N.B. Three specimens are illustrated to show natural product variation.

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People who bought this item also bought:
1. ARAGONITE 'Sputnik' Crystal Cluster (Ref: 23-703)
2. KYANITE Crystal BLACK radiating fan (carded) (Ref: 23-795)

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
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People who bought this item also bought:
1. Specular Hematite Crystal (Ref: SpecHem)
2. Dravite Tourmaline Crystal (India) (Ref: DraviteXtl)

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
£1.45 Including VAT at 17.5%

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People who bought this item also bought:
1. Specular Hematite Crystal (Ref: SpecHem)
2. Iron Pyrite Crystal on matrix 23-854 (Ref: PyriteMatrix)

MAGNETITE crystals (4-9mm) in tub (avge 60pcs)

Ref: 23-817

Magnetite is one of the most widespread and abundant minerals and an important ore of iron. An OXIDE MINERAL, it crystalizes in the isometric system forming iron-black octahedral and dodecahedral crystals, as well as granular or laminated masses.
The naturally magnetic variety, lodestone, was well known to the ancient Greeks. Hardness is 5.5-6.5. Often formed at high temperature, magnetite is a common constituent of crystalline rocks, forming abundant grains in ferromagnesian igneous rocks and disseminated crystals in metamorphic rocks. It also occurs in beach sand, in meteorites, and in the natural abrasive EMERY.
The world’s largest deposits are in northern Sweden. The most powerfully magnetic material occurs in the Harz mountains, in Siberia, and on the island Elba.

Price per tub:£1.95
£2.29 Including VAT at 17.5%

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People who bought this item also bought:
1. Fossil ECHINOID Heliophosa ~2-3cm (Ref: 29-875)
2. QUARTZ Xtl Double-terminated (Pack of 50gms) (Ref: 23-422)

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.
Click here to see a boxed specimen

Priced from:£3.78
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People who bought this item also bought:
1. Specular Hematite Crystal (Ref: SpecHem)
2. Botriodal polished Hematite specimen (Ref: HematBotr)

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
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KYANITE Crystal BLACK radiating fan (carded)

Ref: 23-795

The aluminium SILICATE mineral, Kyanite (derived from the Greek 'kyanos' meaning 'blue') is used in the manufacture of spark plugs and porcelain etc. Long-bladed (usually blue but sometimes black - like this Brazilian specimen - or rarely Green) triclynic crystals 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; often with Garnet and Staurolite and is one of the two minerals that suposedly never needs cleaning or clearing. Therapists claim that it aligns all the Chakras automatically and immediately with no conscious direction and that it brings tranquility and a calming effect to the whole being with particular emphasis on the throat chakra and the third-eye.

Price per Crystal:£1.23
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People who bought this item also bought:
1. Card boxes (Ref: CardBox)
2. Iron Pyrite 'Fool's Gold' Crystal (Ref: PyriteXtl)

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

Ref: 23-797

Price per crystal£1.23
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People who bought this item also bought:
1. Abalone Shell Cabochon (Ref: CabAbal)
2. Single Aquamarine (Beryl) Crystal. approx 3.5cms (Ref: AquaXtlCard)

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

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People who bought this item also bought:
1. Hematite Cabochon (Ref: CabHemat)
2. Carnelian Agate Cabochon (Ref: CabCarn)

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
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People who bought this item also bought:
1. Specular Hematite Crystal (Ref: SpecHem)
2. Dendritic Xtl on Slab (Ref: Dendrite)

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
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People who bought this item also bought:
1. Tigereye Gold Tumbled (Ref: TigereyeG)
2. Aventurine Green Quartz Tumbled (Ref: AventGreen)

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

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People who bought this item also bought:
1. Dravite Tourmaline Crystal (India) (Ref: DraviteXtl)
2. FUCHSITE Mica specimen (Brazil) (100gms) (Ref: 23-740)