Silicates

562 results

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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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Alamosite

$200

Tsumeb Mine, Namibia

Alamosite is a rare lead inosilicate which forms sprays and platy colourless to white crystals at Tsumeb.

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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

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Goethite on Quartz with Microcline

$300

Lake George Area, USA

This is one of those one-off, quirky specimens which makes you smile simply because it is that bit different

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Beryl var. Aquamarine

$350

Teófilo Otoni, Minas Gerais

A single gemmy to translucent Aquamarine Beryl crystal displaying well-defined growth zones and measuring 5.9

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Chrysocolla ps. after Malachite ps. after Azurite with Quartz

$2,500

Tenke-Fungurume area, DR Congo

A super-unusual small cabinet specimen of vivid sky-blue Chrysocolla preferentially coated with orange-tan

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Topaz

$400

Kleine Spitzkoppe, Erongo Region

Topaz crystals from Kleine Spitzkoppe are characteristically well terminated and quite chunky and exude great

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Diopside with Graphite

$700

Merelani Hills, Tanzania

Crystallised Diopside shifts to a much higher gear in the Merelani Hills mining district of north-eastern

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Aegirine with Orthoclase

$950

Mount Malosa, Malawi

A spectacular group of intergrown, lustrous coal-black Aegirine crystals, richly coated in snow-white crystals

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Epidote with Actinolite var. Byssolite

$2,000

Knappenwand, Austria

A small cabinet Epidote with Actinolite from the Knappenwand in the Untersulzbach Valley, a locality

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Willemite

$500

Tsumeb Mine, Namibia

An excellent small cabinet specimen of blue and green Willemite from Tsumeb mine in Namibia. Stood vertically

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Epidote

$250

Knappenwand, Austria

A single, ex. matrix Epidote crystal from the famous occurrence at Knappenwand close to Salzburg in Austria.

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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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Beryl var. Aquamarine with Muscovite

$7,500

Pingwu, Sichuan Province

A stunning large cabinet specimen of smoky sky-blue Aquamarine Beryl crystals embedded in a matrix of

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Vesuvianite

$7,500

Jeffrey Mine, Québec

An approximately 13 x 8 cm plate of vibrant lime green Vesuvianite crystals from the Jeffrey mine at Asbestos

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Cavansite

$100

Wagholi Quarries, Maharashtra

A beautiful rosette of the rare calcium-vanadium silicate Cavansite measuring 1.5 x 1.0 x 0.5 cm, perched on a

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Topaz

$200

Stiepelmann Mine, Namibia

An excellent, well-formed Topaz crystal from the Spitzkopje area of the Erongo Region in Namibia. This gemmy,

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Hemimorphite

$6,500

Esmeralda Mine, Durango

A superb large cabinet specimen of surface-translucent, bright duck-egg to sky blue botryoidal, bubbly

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Diopside var. Chromian Diopside

$400

Merelani Hills, Tanzania

An attractive thumbnail specimen of gemmy bright lime green Diopside displaying two crystals from the Merelani

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Dioptase

$1,200

Dioptase on Calcite is probably the most iconic of species combinations from the legendary Tsumeb mine in

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Willemite

$900

Tsumeb Mine, Namibia

Willemite, a zinc silicate, is known to occur throughout the Tsumeb orebody. This small miniature is formed

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Dioptase on Calcite with Wulfenite

$600

Tsumeb Mine, Oshikoto Region (Otjikoto Region)

A charming small miniature of lustrous gemmy to translucent emerald green Dioptase crystals measuring to 8 mm

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Dioptase on Calcite

$7,500

Tsumeb Mine, Namibia

There are several mineral associations with the copper silicate Dioptase at Tsumeb, but this of snowy white

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Chrysocolla ps. after Malachite ps. after Azurite with Quartz

$2,800

Tenke-Fungurume area, DR Congo

The Democratic Republic of the Congo (DRC) is the largest country in sub-Saharan Africa and the Kolwezi mining

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Beryl var. Aquamarine

$850

Barra De Salinas, Brazil

This aesthetic and unusually coloured Aquamarine variety of Beryl is from the granite pegmatites located west

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Beryl var. Heliodor

$4,000

Volodarsk-Volynskii Pegmatite District, Ukraine

A fine gemmy and delicately tinted lime to apple green crystal of Heliodor, a gem variety of Beryl, from the

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Quartz on Chrysocolla

$850

Globe, Arizona

Hemispheres measuring to 5 mm diameter and botryoidal aggregates of sky blue Chrysocolla are covered by a thin

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Titanite with Orthoclase var. Adularia

$950

Tormiq Valley, Pakistan

Beautiful well-formed and twinned bladed crystals of lustrous light lime to avocado green Titanite measuring

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Cassiterite with Quartz and Zinnwaldite

$250

St. Michael's Mount, England

Cassiterite from St. Michael's Mount at Marazion near Penzance is almost always distinctive as from this

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Paracelsian

$3,500

Benallt Mine, Wales

A most special small cabinet specimen of crystallised Paracelsian from Benallt mine on the Lleyn Peninsula of

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Chrysocolla with Malachite

$150

Lizard area, Cornwall

We only have Cornwall as the locality for this miniature Chrysocolla with Malachite but are fairly certain it