Silicates

551 results

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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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Zircon

$150

Tigerville Prospect, South Carolina

The Tigerville Prospect in South Carolina is worked for Vermiculite occurring in a pegmatite and while mining,

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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

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Anatase with Albite and Quartz

$1,000

Twll Maen Grisial, UK

A 3 mm clove brown Anatase crystal nestles in a small cleft next to colourless Quartz crystals and several

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Spodumene var. Kunzite

$3,500

Oceanview Mine, California

A magnificent, ex-matrix crystal of Kunzite, the lilac variety of Spodumene, from the Oceanview mine at Pala

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Grossular var. Hessonite

$750

Jeffrey Mine, Canada

Jeffrey mine at Asbestos (now named Val-des-Sources) in Québec, Canada, was a chrysotile asbestos mine with

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Willemite with Franklinite

$650

Sterling Mine, New Jersey

Willemite from the world famous Sterling mine at Ogdensburg, New Jersey, USA, is typically found as a massive

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Hydroxyapophyllite-(K)

$400

Bull Run Quarry, Virginia

The interestingly named Bull Run quarry is near to Conklin in Loudoun County, Virginia, about 170 km southwest

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Dioptase on Calcite

$1,700

Tsumeb Mine, Namibia

An outstanding large thumbnail specimen composed of two big intergrown Dioptase crystals on a mini-dome of 2

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Willemite with inclusions of Hydrozincite

$800

Tsumeb Mine, Namibia

A most unusual miniature of apricot orange and light chocolate brown Willemite crystals, many with inclusions

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Dioptase on Calcite with Duftite

$750

Tsumeb Mine, Namibia

Iconic, emerald green Dioptase crystals are generously scattered over a surface of colourless 1 to 2 mm

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Beryl var. Aquamarine

$2,000

Ameib Farm, Namibia

Sometimes, for reasons difficult to express, a certain specimen can get to you. There is just something

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Spessartine Garnet on Muscovite

$1,500

Loliondo, Tanzania

A bright rich apricot orange cluster of Spessartine Garnet crystals perch at one end of a silvery Muscovite

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Andradite

$3,500

Antetezambato Demantoid-Topazolite Mine, Antsiranana Province

An outstanding cluster of gemmy to translucent Demantoid crystals, the green variety of Andradite Garnet, on a

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Hedenbergite

$850

Nordmark Odal Field (Nordmarksberg), Sweden

This well crystallised miniature Hedenbergite is from the Nordmark Odal Field at Filipstad in Värmland,

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Forsterite var. Peridot

$5,000

St. Johns Island, Egypt

A very well formed translucent to gemmy single crystal of Peridot, the gem variety of Forsterite. From

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Andradite Garnet

$5,000

Serifos Island, Greece

An excellent rich cabinet specimen of Andradite Garnet displaying abundantly intergrown crystals measuring to

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Vesuvianite

$1,500

Jeffrey Mine, Québec

A rich and lustrous specimen of Vesuvianite from Jeffrey mine at Asbestos in Canada. Only recently the town’s

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Paracelsian

$3,500

Benallt Mine, Wales

The Benallt mine on the Lleyn Peninsula in Gwynedd, Wales, is an amazing locality but one not that well known,

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Hemimorphite on Baryte

$125

50 fm Flats, England

Golconda mine, west of Wirksworth in Derbyshire, produced both lead and barium in its heyday. Local

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Brookite with Albite

$250

Twll Maen Grisial, UK

The area around Prenteg in North Wales is famous for its titanium dioxide polymorphs, Anatase, Brookite and