Native Metal Collection (page 7)

Beryl
A specimen of beryl (beryllium aluminum silicate). There are several varieties of beryl, aquamarine (blue), emerald (green), goshenite, heliodor and morganite

Brookite
A specimen of the mineral brookite (titanium oxide) from Tremadoc wales. Brookite is a polymorph, it has the same chemical composition as rutile and anatase

Emerald, a variety of beryl
A cut teardrop stone and a prismatic crystal of the green variety of beryl (beryllium aluminum silicate) known as emerald. Specimen from the Natural History Museum, London

Adamite
A specimen of the mineral adamite (zinc arsenate hydroxide). It is a fluorescent mineral, popular among collectors and shows bright green fluorescent under UV lights

Acanthite
A specimen of the mineral acanthite (silver sulphide). Acanthite is a sliver based mineral and black in colour

Almandite
A crystal and a cut stone of almandite, a deep red garnet comprised of (iron aluminum silicate). Specimen from the collections of the Natural History Museum, London

Benitoite cut stone
Benitoite was discovered in 1906 near the San Benito river in California which remains the only known locality for this (barium titanium silicate mineral)

Sinhalite
A round mixed cut of 15.5 carats. Silhalite comprises of (magnesium aluminum borate) and only known to derive from the gem gravels of Sri Lanka

Conichalcite
A specimen of the mineral conichalcite (calcium copper arsenate hydroxide). This mineral holds orthorhombic crystals and belongs in the Adelite group

Liroconite comprises of (hydrated copper aluminum arsenate hydroxide). It is blue in colour and forms from the oxidation of copper ores. Specimen from the collections of the Truro Museum, Cornwall

Banded iron formation
3, 000 million year old specimen of banded iron-rich chert from the Murchison Goldfield, Western Australia. The banding derives from differing amounts and oxidation state of the iron composite

Crystal structure
A cross-section through an iron meteorite which shows the alien crystal structure

Copper is an elemental metal. Seen here is a dendritic or branching native copper specimen from the collections held at the Natural History Museum, London

Azurite
A specimen of the mineral azurite (copper carbonate hydroxide) from Chessy, Dept Rhone, France

Beryl
From left to right, different varieties of berly (beryllium aluminum silicate) cut stone; emerald, aquamarine, morganite and heliodor

Mesolite is comprised of (hydrated sodium calcium aluminum silicate). Its needle-like crystals formed inside a gas bubble in cooling volcanic rock

Muscovite
A specimen of muscovite (Potassium aluminum silicate hydroxide fluoride) with hematite and limonite inclusions, from Adelaide Australia

Native silver

Malachite
An Octagonal column of the mineral malachite. Malachite is a green mineral, (copper carbonate hydroxide), and is often used as a semi-precious stone

Rutile
A specimen of the mineral rutile (titanium oxide) which is a major ore of the metal titanium. This specimen is from Graves Mountain, Lincoln County, Georgia. USA

Galena
A specimen of the mineral galena (lead sulphide) which is a major ore of lead as well as silver. This specimen is from Wanlockhead mine Dumfriesshire, Scotland

Indian gold tore and nose ring c. 1912
Annotated watercolour drawing by Oliva Fanny Tonge (1858-1949), from one of 16 sketchbooks presented to the Natural History Museum in 1952

Copper ore
A watercolour drawing of various copper ores by Henry Bone 1755-1834. Original drawing for plate in Philip Rashleighs 1797 Specimens of British Minerals

Hematite
Iridescent crystalline mass of hematite (iron oxide) from Rio Marina, Elba. Specimen from the collections of the Natural History Museum, London

No. 1 Wagon, South African Gold Field
Expedition & of Mr Hartley & the hunters nr camp of Sir John Swinburne N. of Um Vuli River. Sketch 26 from a collection of original sketches by Thomas Baines (1820-1875)

Helichrysum obconicum
Copper plate by Gabriel Smith from the original drawing by Sydney Parkinson made during Captain James Cooks first voyage across the Pacific, 1768-1771

Asplenium monanthes, single-sorus spleenwort
Copper plate by Daniel Mackenzie from the original drawing by Sydney Parkinson made during Captain James Cooks first voyage across the Pacific, 1768-1771

Garnet

Topaz crystal
An imperial topaz crystal from Brazil, length 101mm long. Topaz comprises of (aluminum silicate fluoride hydroxide)

Baryte crystals
Yellow prisms of the minreal baryte (BaSO4) on hematite (iron oxide) from Dalmellington Mine, Frizington, Cumbria

Revophone Crystal Set

Hemimorphite crystals enclosed in rock crystal
Hemimorphite, formerly known as calamine is comprised of (hydrated zinc silicate hydroxide). Magnification = x1.2

Kornerupine (magnesium aluminum iron boro-silicate hydroxide) is a rare boro-silicate mineral which occurs in a range of greens and browns - this emerald colour is exceptional

Citrine and sapphire
Fine and poor examples of gem cutting and polishing. A superbly cut citrine (a yellow variety of quartz) and a poorly cut sapphire (blue), a variety of the mineral Corundum (aluminium oxide)

Fibrolite is an aluminium silicate. It is a rare variety of the mineral sillimanite. This stone from Burma shows blueish-violet and pale yellow pleochroic colours

Lapis lazuli from Afghanistan
Polished slab of lapis lazuli containing some brassy-coloured pyrite. Lapis lazuli (sodium calcium aluminum silicate sulphur sulphate) is a rich blue opaque, semi-precious stone

Andalusite cut stone
Andalusite is an aluminium silicate. It shows spectacular red and green pleochroic colours

Malachite cameo and malachite-chrysocolla mass. Malachite (copper carbonate hydroxide), has a distinctive green banding and belongs to the carbonate class

Belt-hook in lapis lazuli
Carved chinese belt-hook on a piece of rough lapis lazuli from Badakhstan. Lapis lazuli (sodium calcium aluminum silicate sulphur sulphate) is a rich blue opaque, semi-precious stone

Polished slab of rhodonite
A pink specimen of rhodonite (manganese iron magnesium calcium silicate). Rhodon is greek for rose

Lapis lazuli from Siberia
A polished slab of Siberian Lapis lazuli containing white calcite and some brassy pyrite. Lapis lazuli means blue rock, with the rich colour due to the sulphur in its composition

Turquoise vein in shale
Turquoise (hydrated copper aluminum phosphate) vein in shale, from Victoria, Australia. Turquoise is perhaps the most valuable non-transparent mineral

A collection of turquoise specimens
Rough, polished and worked specimens of turquoise (Hydrated Copper Aluminum Phosphate). Turquoise is perhaps the most valuable of the non-transparent minerals

Turquoise
Four different examples of worked turquoise. Turquoise (hydrated copper aluminum phosphate) is perhaps one of the most valuable non-transparent minerals

All Professionally Made to Order for Quick Shipping