Silicates

577 results

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Tremolite

$400

West Pierrepont, New York

A large cluster of intergrown prismatic crystals of Tremolite with scattered sub-centimetre masses of grey to

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Quartz var. Amethyst on Danburite

$275

Charcas, San Luis Potosí

Eight double terminated Amethyst Quartz crystals of delicate violet are strung out over a colourless Danburite

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Quartz var. Amethyst on Danburite

$250

Charcas, San Luis Potosí

Several double terminated Amethyst Quartz crystals of delicate violet are clustered over and to one side of a

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Fluor-buergerite

$750

Mexquitic, San Luis Potosí

Mexquitic de Carmona Municipality in San Luis Potosí, Mexico, is the type locality for Fluor-buergerite, a

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Topaz

$400

Tepetate, Mexico

A 1.5 x 0.9 x 0.5 cm perfectly terminated Topaz crystal protruding vertically from a small block of volcanic

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Hemimorphite

$500

Ojuela Mine, Mexico

Glassy, highly lustrous, milky white tabular Hemimorphite crystals and crystal clusters make-up almost all of

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Danburite

$3,000

Aurora Mine, Mexico

A truly superb cabinet specimen of large terminated Danburite crystals measuring to an exceptional 10

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Inesite with Apophyllite

$1,500

Broken Hill, Australia

Inesite is a relatively rare calcium-manganese-iron silicate hydroxide which occurs in several of the mines at

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Topaz

$6,000

Dassu, Gilgit-Baltistan

This magnificent and genuinely show-stopping gemmy Topaz is from Dassu in the Braldu Valley of Gilgit,

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Scheelite with Muscovite

$2,000

Mount Xuebaoding, Sichuan Province

This gorgeous butterscotch orange octahedral Scheelite crystal set amongst blades of Muscovite Mica is from

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Spessartine on Smoky Quartz on Feldspar

$9,000

Wushan Spessartine Mine, China

Looking at this group of magnificent black Smoky Quartz crystals heavily dusted with bright tangerine orange

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Topaz on Smoky Quartz

$900

Adun-Cholon Range, Russia

A very different looking small cabinet specimen of largely colourless Topaz with rich deep smoky to golden

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Scapolite

$1,500

Badakhshan Province, Afghanistan

A perfectly terminated, pale lilac crystal of Scapolite displays to full advantage against a snow-white matrix

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Afghanite with Phlogopite

$500

Sar-e Sang (Sar Sang; Sary Sang), Badakhshan Province

A deep blue Afghanite crystal extends up above a mixed Phlogopite mica and Calcite matrix from Sar-e Sang in

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Beryl var. Aquamarine

$3,500

Barra De Salinas, Brazil

An ex-matrix, single crystal of milky, sky blue Beryl forming a long hexagonal prism from Barra de Salinas in

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Beryl var. Aquamarine

$2,500

Barra De Salinas, Brazil

An ex-matrix, single crystal of milky, sky blue Beryl forming a long hexagonal prism from Barra de Salinas in

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Spessartine Garnet

$5,000

Navegadora Mine, Brazil

A stunning naturally etched light Burgundy red Spessartine Garnet on Quartz from the Navegadora Claim at

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Phenakite

$1,500

Rio Piracicaba, Brazil

Phenakite is a beryllium nesosilicate sometimes associated with pegmatites and this fine small miniature is

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Dioptase

$250

Tsumeb Mine, Namibia

Gemmy to translucent deep emerald green Dioptase crystals to 4 mm richly coat a thin yet undulating matrix of

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Dioptase with Calcite

$850

Tsumeb Mine, Namibia

Three good size crystals of emerald green Dioptase are perched along a matrix of snowy white rhombohedral

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Grossular Garnet

$2,000

Arrondissement Diakon, Mali

This small cabinet specimen of two intergrown Grossular garnet crystals is an absolute delight; a specimen

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Schorl on Feldspar

$1,300

Davib Ost Farm 61, Namibia

The Davib Ost Farm 61 at Karibib in the Erongo Region of Namibia has become famous for its numerous finely

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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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Azurite with Libethenite and Chrysocolla

$450

Carharrack, Cornwall

This miniature of jumbled Azurite, Libethenite and Chrysocolla is a fine example of typical vein material from

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Cassiterite with Quartz and Mica

$350

Ehrenfriedersdorf, Germany

Lustrous black Cassiterite crystals of typically 1 cm wide form a 3 x 1.5 cm cluster and a few individual

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Apophyllite with Inesite

$4,500

New Broken Hill Consolidated Mine, New South Wales

Inesite is a hydrous calcium manganese silicate which at the Broken Hill mines in New south Wales, Australia,

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Chrysocolla ps. After Malachite ps. After Azurite with Quartz

$900

Tenke-Fungurume area, DR Congo

A completely naturally flat plate of dark green Malachite is overgrown with pastel sky-blue Chrysocolla

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Smoky Quartz with Cassiterite on Zinnwaldite

$500

Cínovec/Zinnwald, Saxony & Ústí Region (Bohemia)

From the Cínovec-Zinnwald ore field which extends into both Germany and the Czech Republic, this Smoky Quartz

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Neptunite with Joaquinite-(Ce)

$1,500

California State Gem Mine (Dallas Gem Min), California

An excellent small cabinet display specimen of terminated, prismatic Neptunite crystals measuring to 2.6 cm

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Tourmaline with Lepidolite and Cleavelandite

$1,500

Himalaya Mine, California

An integrated pair of quite complex Tourmaline prisms, most probably Elbaite, from the Himalaya mine at Mesa

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Chondrodite

$900

Tilly Foster Mine, USA

The Tilly Foster Iron mine at Brewster in Putnam County, New York, USA, worked a large iron ore deposit and

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Elbaite (Tourmaline) with Lepidolite

$1,250

Pala Mining District, California

A single prism of bi-coloured Elbaite Tourmaline with a little attached Lepidolite mica from the Pala Mining

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Epidote

$1,250

Green Monster Mountain, USA

A spectacular thick blocky tabular crystal of very dark green Epidote from the famed Green Monster Mountain on

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Neptunite with Joaquinite-(Ce)

$1,500

California State Gem Mine (Dallas Gem Min), California

Excellent lustrous black prismatic crystals of Neptunite measuring to 1.8 cm long pleasingly contrast against

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Diopside

$1,500

De Kalb Township, New York

A now rare old location for crystal specimens of Diopside from De Kalb in St. Lawrence County, New York, USA.

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Almandine Garnet

$5,000

Russell Garnet Mine, Massachusetts

Essentially five intergrown large dodecahedral Almandine Garnet crystals from the old historic Russell Garnet

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Apophyllite with Prehnite

$500

Centreville, Virginia

To the uninitiated eye this fine colourless to milky white Apophyllite covering peppermint green Prehnite

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Smoky Quartz with Microcline var. Amazonite

$500

Pikes Peak, Colorado

Blue-green Amazonite Feldspar with Smoky Quartz requires no introduction form its most famous of all

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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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Quartz

$450

Hot Springs, Arkansas

A beautiful small cabinet specimen of transparent Quartz crystals of the variety Rock Crystal from the

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Hemimorphite

$500

Banner District, Arizona

Botryoidal, powder blue Hemimorphite coats both sides of a flattened sandy coloured matrix from the Banner

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Dioptase

$6,500

Tsumeb Mine, Namibia

Of the 335 recorded mineral species from the Tsumeb mine in Namibia there is just one which has become

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Dioptase on Calcite with Duftite

$2,000

Tsumeb Mine, Namibia

A charming and choice miniature of rhombohedral Calcite crystals preferentially coated with micro Calcite

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Willemite pseudomorph after Azurite

$2,500

Tsumeb Mine, Oshikoto Region (Otjikoto Region)

An incredibly rare specimen of turquoise-sky-blue Willemite pseudomorphing after a group of vertically

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Ferberite with Quartz, Galena, Pyrite and Epidote

$5,000

Kara-Oba, Karagandy Province

This description can only begin with Wow! And that’s a massive Wow! From one side, what appears to be one

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Apophyllite with Calcite and Stilbite

$400

Pune, India

A classic Pune double terminated Apophyllite (probably Fluorapophyllite) crystal, 7.5 cm long, sits across and

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Hyalophane

$1,000

Zagradski Potok Mine, Federation of Bosnia and Herzegovina

Characteristic twinned crystal of gemmy colourless to translucent white Hyalophane crystal from the Zagradski

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Brookite with Albite

$300

Twll Maen Grisial, UK

Simply the mention of Prenteg conjures thoughts of the three titanium dioxide polymorphs and this terrific