Silicates

213 results

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Willemite with Calcite

$1,500

Tsumeb Mine, Oshikoto Region (Otjikoto Region)

A rich miniature, with a core of dark matrix, completely hidden by an enveloping overgrowth of drusy

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Willemite pseudomorph after Cerussite

$2,500

Tsumeb Mine, Oshikoto Region (Otjikoto Region)

A rare and fascinating specimen of Willemite, forming pseudomorphs after Cerussite and epimorphs and

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Willemite with Calcite and Cerussite

$900

Tsumeb Mine, Oshikoto Region (Otjikoto Region)

A rich intergrown crystal specimen of Willemite displaying a core of white overgrown by a gemmy clear zone

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Topaz

$1,500

Ouro Preto, Brazil

A substantial prismatic crystal of Topaz from Ouro Preto, Brazil, measuring to 5.4cm mostly of a pink colour

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Dioptase

$300

Mammoth-St. Anthony Mine, USA

A classic small cabinet specimen of richly intergrown prismatic emerald green Dioptase crystals abundantly

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Spodumene

$5,000

Beebe Hole Mine, California

Gemmy tinted yellow Spodumene forms a striated naturally etched crystal passing into the pink gem variety

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Vesuvianite

$1,500

Jeffrey Mine, Québec

A rich lustrous crystal specimen of Vesuvianite from the Jeffrey Mine, Canada. Well-formed gemmy to

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Epidote

$1,000

Concession Morgan 3, Lima Department

A substantial lustrous crystal of olive-green to pistachio-green Epidote measuring to 2.5cm displays above an

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Spodumene gem variety Kunzite

$2,400

Pala, California

A fine gem pink crystal of lustrous Kunzite measuring to 7.5cm displays excellent form, from the Pala

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Hemimorphite

$650

Santa Eulalia, Mexico

A classic specimen of Hemimorphite displaying an excellent array of white opaque to colourless terminated

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Epidote

$750

Green Monster Mountain, USA

A classic miniature specimen of rich deep olive green Epidote from the Green Monster Mountain, Alaska,

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Danburite

$3,000

Aurora Mine, Mexico

A superb crystal specimen of large bladed terminated Danburite measuring to an exceptional 10cm. Crystals of

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Prehnite

$600

Rauschermühle Quarry, Rhineland-Palatinate

An excellent specimen of green Prehnite with rhombohedral Calcite from the Rauschermühle quarry at

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Apophyllite

$950

St Andreasberg, Germany

A 6.5 x 3.5 cm band of gemmy pale candy-pink Apophyllite crystals traverse a block of off-white, rhombohedral

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Fluorite with Quartz

$3,250

Freiberg District, Germany

A superb and aesthetic bed of highly lustrous, semi-transparent Fluorite cubic crystals of a light

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Calcite on Quartz

$950

Cavnic, Romania

Lustrous cauliform clusters of opaque, snow-white Calcite coat glassy Quartz crystals to 2.5 cm over a matrix

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Topaz

$600

Schneckenstein Cliff, Germany

Light lemon yellow prismatic crystals of Topaz to 1.5 cm richly sit on top of a light and dark foliated matrix

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Spessartine Garnet

$3,500

North Mine, New South Wales

A substantial and important specimen for the crystal size of the lustrous Spessartine Garnet

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Willemite

$1,250

Tsumeb Mine, Oshikoto Region (Otjikoto Region)

Siderite-rich Dolomite forms a rounded platy matrix almost entirely encrusted on all faces with colourless and

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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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Tennantite with Quartz

$350

Tsumeb Mine, Oshikoto Region (Otjikoto Region)

Sooty-black tetrahedral crystals of the copper-iron sulphosalt Tennantite richly cover a matrix of massive

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Dioptase with Calcite and Duftite

$400

Tsumeb Mine, Oshikoto Region (Otjikoto Region)

A tremendous small cabinet specimen of equant, deep emerald-green Dioptase crystals to between 2 and 3 mm

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Axinite-(Mn)

$2,000

Canta, Lima Department

A superb lustrous crystal specimen of Axinite-(Mn) from the recent find (2015) in the Canta area in Peru. The

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Baddeleyite, Zircon var Caldasite

$500

Poços Poços de Caldas alkaline complex, Brazilde Caldas alkaline complex

A rare specimen of botryoidal lustrous grey-green Caldasite a mixture of Baddeleyite with Zircon,

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Piemontite with Garnet, “Alurgite” and Braunite

$250

Prabornaz Mine (Praborna Mine), Aosta Valley

A long shard of off-white, cryptocrystalline Quartz is shot through with laths to 6.5 cm of black to deep

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Andradite Garnet

$1,250

Mega Horio, Aegean Islands Department

A dome of Andradite garnet encloses an underlying matrix of dark olive-green Hedenbergite from the world

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Andradite Garnet

$1,000

Mega Horio, Aegean Islands Department

A plate composed entirely of Andradite garnet from the classic locality at Mega Horio on Serifos, Greece. The

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Andradite with Hedenbergite and Quartz

$1,250

Mega Horio, Aegean Islands Department

A fine example of the now classic Andradite location on Serifos Island, Greece. Excellent

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Cronstedtite

$700

Kutná Hora, Bohemia

A rare example for the location of Cronstedtite from Kutná Hora, Czech Republic. A druse of terminated

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Uvarovite Garnet

$2,500

Outokumpu Cu-Co-Zn-Ni-Ag-Au ore field, Eastern Finland Region

A number of rich nickel green classic crystals of the uncommon Garnet species Uvarovite measuring to 1.1cm

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Uvarovite Garnet

$7,500

Outokumpu Cu-Co-Zn-Ni-Ag-Au ore field, Eastern Finland Region

Two rich nickel green coloured translucent to opaque areas of comparatively well-formed crystals of

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Almandine Garnet

$400

Bondasca Valley, Grischun

A well-developed crystal of Almandine Garnet measuring to 1cm with a rich rootbeer colour and internal

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Titanite

$1,200

Schiedergraben, Salzburg

A well-formed bladed crystal of Titanite measuring to 3cm sits prominently at an

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Grossular Garnet with Clinochlore

$3,000

Ala Valley, Piedmont

Excellent gemmy orange-brown well-formed crystals of Grossular measuring to 6mm are neatly clustered with

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Grossular var Hessonite

$300

Gava Valley, Liguria

Classic rich deep maroon red well-formed crystals of Grossular measuring to 5mm, with grey-green

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Scapolite

$1,500

Badakhshan Province, Afghanistan

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

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Dioptase

$2,000

Tsumeb Mine, Oshikoto Region (Otjikoto Region)

An excellent single crystal of emerald green gemmy-translucent Dioptase measuring to a good 1.5cm with great

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Willemite with Calcite

$4,500

Tsumeb Mine, Oshikoto Region (Otjikoto Region)

A fine specimen of translucent blue Willemite displaying a pleasing botryoidal form with a druse of

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Beryl Var. “Aquamarine”

$7,500

Malyshevo, Russia

A tightly clustered group of strikingly vivid sky-blue Beryl crystals containing many gemmy zones from the

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Beryl Var. “Emerald”

$1,200

Guavio-Guateque Mining District, Colombia

A busy group of bright mid-emerald-green Beryl crystals of the variety “Emerald” from the Guavió-Guatéque

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Hemimorphite

$1,850

Ojuela Mine, Mexico

An exquisite small cabinet specimen of perfectly formed milky-white Hemimorphite crystals densely coating a

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Quartz Var. “Eisenkiesel” on Fluorite

$5,000

A magnificent large cabinet display specimen of the “Eisenkiesel” variety of Quartz richly covering a bed of

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Hemimorphite

$5,000

A stunning folded bed of mamillated deep sky-blue Hemimorphite from the Sa Duchessa Mine at Oridda in

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Hemimorphite

$350

Intense sky-blue botryoidal Hemimorphite forms a 0.5 cm thick crust over a finely brecciated light tan

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Quartz Var. “Amethyst” with Prehnite

$1,200

Goboboseb Mountains, Namibia

A beautiful 8.3 x 2.5 x 1.6 cm transparent Quartz crystal with wispy purple “Amethyst” zones from the

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Olivenite on Quartz

$1,250

A vein section of rusty, iron-stained Quartz is totally encrusted across its top surface with prismatic

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Fluorite with Calcite and Quartz

$700

Weardale, England

Chains of stubby cream Calcite crystals, of about 0.8 cm, run across a large cluster of pale mauve cubic

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Goethite with Quartz

$300

A splendid small cabinet example of a Goethite-Quartz vein section from the Restormel Royal Iron Mine at