Silicates

508 results

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Augite (Pyroxene) with Calcite

$1,400

Arendal, Aust-Agder

This specimen of black Augite with salmon-pink Calcite is from the historic collection of Archduke Stephan of

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Dioptase

$1,750

Tsumeb Mine, Namibia

Although categorised at Tsumeb as “common”, finds of the quality and crystal size displayed in this specimen

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Dioptase

$1,250

Tsumeb Mine, Namibia

Of all Tsumeb’s spectacular minerals, the copper silicate Dioptase is widely considered its signature

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Dioptase on Calcite

$650

Tsumeb Mine, Namibia

Four charming, equant Dioptase crystals averaging 4 to 6 mm diameter form a deep emerald green linked chain

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Kaolinite ps. after Orthoclase

$900

Goonbarrow China Clay Pit, England

The superb Kaolinite pseudomorphs after Orthoclase feldspar found in many of Cornwall’s china clay pits (CCPs)

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Epidote with Actinolite

$7,500

Knappenwand, Austria

Gemmy, bottle to deep sage-green translucent Epidote from the Knappenwandmulde series of epidote-amphibolites

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Magnetite with Rutile, Hematite, Adularia and Quartz

$6,000

Binn Valley, Switzerland

Magnificent, individual sharp octahedral Magnetite crystals are richly scattered across the surface of a

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Quartz with Chlorite

$1,500

Central St. Gotthard Massif, Switzerland

A cluster of superb and impressive ice-clear Quartz crystals rest on a thin yet strong plate of mixed

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Magnetite in Asbestos

$2,500

Totenkopf (Lower Riffl glacier), Salzburg

An amazing and superb, cuboctahedral Magnetite measuring 2.3 cm across sits partly embedded in a matrix of

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Hematite with Orthoclase var. Adularia

$250

St. Gotthard Massif, Ticino (Tessin)

A delightful small thumbnail Iron Rose Hematite from the St. Gotthard Massif in Switzerland, with an attached

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Tourmaline with Albite var. Cleavelandite

$1,250

Elizabeth R. Mine, California

A rare location piece from the Elizabeth R. mine on Chief Mountain at Pala, California. Judging by its

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Beryl var. Aquamarine

$7,500

Corrego Sao Francisco, Brazil

Mounted vertically on its acrylic base, the wonderful colour, morphology, and surface texture of this

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Tourmaline with Lepidolite

$3,500

Himalaya Mine, California

This most stunning miniature Tourmaline (probably Elbaite) is bicoloured, grading from pale sage-green to

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Neptunite with Joaquinite-(Ce)

$3,500

California State Gem Mine, California

This exposed vein section of snow-white Natrolite is richly covered with scattered, long, elegant black

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Neptunite with Joaquinite-(Ce) and Benitoite

$2,000

California State Gem Mine, California

The combination of Neptunite and Benitoite is a classic from the California State Gem mine on Santa Rita Peak,

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Hydroxylherderite on Albite

$600

Barra De Salinas, Brazil

Excellent, opaque pale flesh pink-creamy crystals of the calcium-beryllium phosphate Hydroxylherderite are

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Spodumene var. Kunzite

$400

Stewart Mine, USA

This splendid off-matrix Spodumene crystal is the variety Kunzite named for George Frederick Kunz, gemmologist

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Fluorite on Muscovite

$350

Davib Ost Farm 61, Erongo Region

A pair of leaf to emerald-green cuboctahedron Fluorite crystals sit on, and contrast against, a thick plate of

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Beryl var. Aquamarine

$1,250

Sumire, Gilgit District

A squat, perfectly developed pale sky-blue Beryl crystal, variety aquamarine, is attractively perched to one

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Fluorite with Quartz

$850

Kara-Oba, Karagandy Province

Perfect octahedral Fluorite crystals to 1.1 cm on edge are almost entirely masked by a sugary coating of

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Beryl var. Aquamarine on Albite

$4,500

Gilgit District, Pakistan

This completely stunning gemmy sky-blue Aquamarine crystal emerges from a rugged snow-white matrix of Albite

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Topaz

$2,500

Volodarsk-Volynskii, Zhytomyr Oblast'

Gem minerals from the large pegmatite bodies at Volodarsk-Volynskii in the Ukraine are highly coveted by

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Lazurite

$4,500

Sar-e Sang, Badakhshan Province

Without doubt, this fantastic inky azure-blue group of Lazurite crystals is a museum-grade specimen and is

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Axinite

$3,500

Obira mine, Japan

Axinite is an uncommon mineral in Japan and this magnificent large cabinet sized specimen is what I would

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Beryl var. Aquamarine

$1,300

Gilgit District, Pakistan

A magnificent thick prismatic Beryl crystal, variety Aquamarine, from Gilgit, Northern Areas, Pakistan with a

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Topaz on Zinnwaldite

$700

Volodarsk-Volynskii, Zhytomyr Oblast'

A classic specimen of smoky-blue and pink-champaign Topaz nestling amongst Zinnwaldite on a matrix of milky

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Calcite on Quartz with Chlorite

$450

Puiva Mount, Western-Siberia

Despite being composed from three of the most common minerals, the way in which these have crystallised and

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Chalcedony

$550

Trevascus Mine, Cornwall

Chalcedony from Trevascus mine at Carnhell Green, between Camborne and Hayle in Cornwall, is readily

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Chalcedony on Quartz

$300

Cornwall, England

Many specimens of Chalcedony on Quartz from Cornwall date from a period where few details were recorded apart

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Hemimorphite on Calcite

$100

Golconda Mine, England

An interesting large thumbnail of micro-crystals of glassy, fawn Hemimorphite coating a twined Calcite crystal

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Greenockite with Prehnite and Pumpellyite

$7,500

Andesite Quarry, Germany

An outstanding crystal of Greenockite (cadmium sulphide), extremely large and well formed for the species,

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Epidote

$1,800

Knappenwand, Austria

A magnificent clustered group of inky dark bottle-green Epidote crystals from the well-known Epidote locality

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Adularia

$850

Bielig Valley (Selking Valley), Switzerland

An impressive stack of thick, lozenge-shaped Adularia crystals aesthetically dusted in micro-crystals of light

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Eulytine

$1,750

Sauschwart Mine, Saxony

Eulytine is a rare bismuth silicate which, in this specimen, forms 1 to 2 mm, highly lustrous gemmy crystals

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Beryl var. Heliodor

$2,500

Murzinka Mine, Urals Region

A rather gorgeous tabular-like Beryl crystal of the variety Heliodor from the historic and famous Murzinka

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Topaz on Orthoclase

$8,500

Murzinka Mine, Urals Region

A rare and stunning specimen of pale blue Topaz crystals on a terminated Orthoclase crystal from the Murzinka

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Calcite with Ilvaite

$900

Dal'negorsk, Russia

An impressive colourless and mainly transparent Calcite crystal, double terminated with an overall length of 6

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Andradite Garnet

$450

Korshunovskoye iron deposit, Irkutsk Oblast

A simply stunning and magnificent example of Andradite Garnet, forming interpenetrant rhombic dodecahedrons to

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Topaz

$600

Pan-taw, Mandalay Region

There is always something rather pleasing about chunky Topaz crystals and this semi-transparent, pale

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Quartz with Andradite

$1,250

Sinerechenskoe skarn occurrence, Primorsky Krai

An aesthetic and quite striking specimen of large, well developed Quartz crystals completely included with

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Diopside

$1,600

Merelani Hills, Tanzania

A neat specimen of gemmy green Diopside from manyara Region, Tanzania

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Beryl var. Aquamarine with Fluorite

$850

Davib Ost Farm 61, Erongo Region

A very aesthesic specimen with several gemmy, transparent vitreous, Aquamarine crystals with Fluorite. The

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Topaz

$200

Stiepelmann Mine, Namibia

well formed classic crystal of Topaz from the Spitzkopje Area in Namibia. The gemmy slightly smokey crystal of

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Thaumasite

$750

N'Chwaning II Mine, South Africa

A superb, gemmy colourless prismatic Thaumasite, from the N'Chwaning mines in South Africa. Thaumasite

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Beryl var. Aquamarine

$500

Davib Ost Farm 61, Erongo Region

This splendid pale to deep sky-blue hexagonal crystal of Aquamarine, the blue variety of Beryl, is from Davib

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Forsterite var. Peridot

$5,000

St. Johns Island, Egypt

A very well formed translucent-gemmy single crystal of Forsterite var Peridot with pleasing

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Fluorite with Chalcopyrite, Scheelite and "Zinnwaldite" on Quartz

$850

Horni Slavkov (Schlaggenwald), Czech Republic

A real eye-catcher of a specimen from Horní Slavkov in the Karlovy Vary Region of the Czech Republic. A

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Rhodonite with Galena

$800

North Mine, Australia

A magnificent example of the classic combination of Rhodonite crystals embedded and protruding from a bight