Silicates

610 results

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Andradite Garnet with Hedenbergite and Quartz

$1,250

Mega Horio, Aegean Islands Department

A fine example from the classic Andradite Garnet locality at Mega Horio on Serifos Island, Greece. Excellent,

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Melilite

$1,750

San Rocco, Lazio

Labelled Melilite, this superbly crystallised specimen is from San Rocco in the Viterbo Province of Lazio,

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Quartz with Chlorite

$750

Hingston Down Quarry, Cornwall

Hingston Down is a large quarry still in operation to the west of Gunnislake, roughly midway between

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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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Cassiterite var. Wood Tin with Quartz and Dolomite

$500

Cornwall, England

A good example of the variety of Cassiterite known as Wood Tin, due to its concentric banded appearance. This

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Cronstedtite

$1,500

Wheal Jane, England

A well-formed radial cluster of lustrous black acicular Cronstedtite crystals measuring to 8 mm are nestled in

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Chrysocolla with Native Copper

$500

Goonhilly Downs, Cornwall

A specimen with a lot of history! Admittedly, rather an ugly brute comprising Native Copper pervading and

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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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Andradite Garnet

$750

Ocna De Fier, Romania

A handsome small cabinet specimen of limey yellow-green and mid to dark chocolate brown Andradite crystals

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Axinite-(Fe)

$250

Meldon Aplite Quarry, England

An intergrown cluster of mottled light and dark chocolate brown Axinite-(Fe) bladed crystals from Meldon

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K Feldspar

$250

Zillertal, Austria

This really is an unusual and beautiful specimen of Adularia from the Zillertal Valley in the Tyrol, Austria.

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Nasonite in Datolite and Goethite

$300

Torr Works Quarry, England

Nasonite is one of the Holy Grails from the rare oxychloride suite occasionally found in Torr Works quarry at

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Aurichalcite with Hemimorphite and Baryte

$150

Western Flats, Derbyshire

During the early 1980’s, collectors local to Derbyshire undertook a lot of exploratory work in the Golconda

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Hemimorphite

$200

Golconda Mine, England

Light fawn micro-crystals of Hemimorphite form drusy mounds to around 1.8 cm over a chalky-white Baryte

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Hemimorphite

$250

Roughton Gill Area, England

Light powder blue to colourless botryoidal druses and well-formed Hemimorphite crystals richly cover the

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Quartz with Chlorite inclusions

$400

Cornwall, England

This fine and aesthetic group of Quartz crystals is from Cornwall, but exactly where from has gone

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Chrysocolla

$400

Lizard area, Cornwall

Areas rich in the hydrated copper phyllosilicate, Chrysocolla, partly cover the surface of a brecciated,

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Aragonite on Quartz

$850

Botallack Mine, UK

An old-time specimen, collected prior to 1870, of micro-crystals of Aragonite forming globular clusters over

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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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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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Gadolinite-(Y)

$250

Høydalen (Høydalen Seter), Norway

A single crystal of Gadolinite-(Y) from one of the two Microcline pegmatite quarries at Høydalen in the

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Pyroxene

$3,000

Nordmark Odal Field (Nordmarksberg), Sweden

A stunning specimen of highly lustrous Pyroxene crystals ranging from perfectly developed equant crystals of

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Zircon

$2,500

Seiland Island, Norway

This really is a museum quality Zircon from the nepheline syenite pegmatites in the southern part of the

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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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Helvine

$750

St. Richard Mine (Friedefürst Mine), Saxony

Helvine, a rare beryllium manganese silicate, forms sharp buttery lemon yellow tetrahedral crystals richly

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Eulytine

$400

Schneeberg District, Germany

Sparkling micro-crystals of the bismuth silicate Eulytine form a pervasive druse along with scattered single

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Prehnite

$600

Rauschermühle Quarry, Rhineland-Palatinate

An excellent specimen of smoky olive to creamy apple green Prehnite with rhombohedral white to pale apricot

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Titanite

$700

Untersulzbach Valley, Austria

A terrific cabinet specimen composed of lustrous glassy lime-green Titanite crystals scattered over a strongly

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Potassium Feldspar var. Adularia with Chlorite

$350

Felber valley, Salzburg

A quite delightful, perfect Adularia crystal with smaller attached crystals to its sides and completely

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Axinite with Quartz and Epidote

$4,000

Bourg d'Oisans, France

A stunning Alpine-type specimen of deep clove-brown Axinite crystals, intermingled and overlaying glassy

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Epidote

$3,500

Bourg d'Oisans, France

A fine, rich and lustrous large cabinet specimen of prismatic Epidote crystals varying from pistachio to dark

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Garnet (Andradite / Grossular)

$450

Shap Blue Quarry, Cumbria

Specimens of Garnet from the Shap Blue quarry at Shap in Cumbria are a sought after addition to any collection

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Andradite with Calcite

$950

Ocna De Fier, Romania

An excellent miniature of well-formed Andradite Garnet crystals measuring to 1.2 cm, displaying the

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Epidote

$700

Kimmeria, East Macedonia and Thrace

An elegant cluster of well developed, deep leaf-green Epidote crystals from the molybdenite skarn deposit at

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Diopside and Magnetite and Clinochlore

$300

Nordmark Odal Field (Nordmarksberg), Sweden

A saddle-shaped, V-section, greenish metamorphic matrix, similar to a tight recumbent fold, is encrusted on

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Topaz

$1,000

Schneckenstein Cliff, Germany

A charming miniature of a delicate lemon yellow Topaz crystal from the classic German locality of

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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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Agrellite

$150

Kipawa alkaline complex, Canada

This cleaved long block of the rare silicate Agrellite is from its type locality in the Kipawa alkaline

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Titanite

$450

Tujetsch, Switzerland

This impressive small cabinet specimen is richly adorned by many golden yellow Titanite crystals from the

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Microcline var. Hyalophane

$3,500

Busovača, Central Bosnia Canton

Hyalophane is a clear and colourless variety of Microcline Feldspar, deriving its name from the Greek meaning

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Pentagonite

$3,500

Wagholi Quarries, Maharashtra

This amazing Pentagonite is from the Wagholi Quarries in the Pune District of Maharashtra State in

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Tausonite with Lamprophyllite and Aegirine

$200

Murunskii Massif, Russia

I have to be honest and say, if this specimen were entering a Beauty and the Beast contest, it would sit more

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Diopside

$750

Fargon Meeru, Badakhshan

The dense white marble at Fargon Meeru in the Koksha Valley of Afghanistan is host to excellent Diopside,

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Wiluite

$1,000

Vilyui River Basin, Russia

A superb and seldom encountered specimen of the complex silicate Wiluite from one of its two co-type

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Topaz on Orthoclase Feldspar

$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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Topaz

$5,000

Murzinka Mine, Urals Region

An off-matrix terminated Topaz crystal of bright cornflower-blue from the Murzinka mine in the Prigorodny

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Titanite with Rutile, Actinolite and K Feldspar var. Adularia

$4,500

Teufelsmühle, Salzburg

The mindat page shows an excellent photo by Günter Grundmann of the Teufelsmühle and to put it mildly, it

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Ilvaite

$2,500

Rio Marina, Italy

Ilvaite is a calcium-iron silicate and this superb crystal is from its type locality at Rio Marina on the Isle