Silicates

 

551 results

Brookite with Albite
$300
 Twll Maen Grisial, UK
Simply the mention of Prenteg conjures thoughts of the three titanium dioxide polymorphs and this terrific
Zircon
$150
 Tigerville Prospect, South Carolina
The Tigerville Prospect in South Carolina is worked for Vermiculite occurring in a pegmatite and while mining,
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
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
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
Topaz
$400
 Kleine Spitzkoppe, Erongo Region
Topaz crystals from Kleine Spitzkoppe are characteristically well terminated and quite chunky and exude great
Diopside with Graphite
$700
 Merelani Hills, Tanzania
Crystallised Diopside shifts to a much higher gear in the Merelani Hills mining district of north-eastern
Aegirine with Orthoclase
$950
 Mount Malosa, Malawi
A spectacular group of intergrown, lustrous coal-black Aegirine crystals, richly coated in snow-white crystals
Epidote with Actinolite var. Byssolite
$2,000
 Knappenwand, Austria
A small cabinet Epidote with Actinolite from the Knappenwand in the Untersulzbach Valley, a locality
Willemite
$500
 Tsumeb Mine, Namibia
An excellent small cabinet specimen of blue and green Willemite from Tsumeb mine in Namibia. Stood vertically
Epidote
$250
 Knappenwand, Austria
A single, ex. matrix Epidote crystal from the famous occurrence at Knappenwand close to Salzburg in Austria.
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
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
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
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
Topaz
$200
 Stiepelmann Mine, Namibia
An excellent, well-formed Topaz crystal from the Spitzkopje area of the Erongo Region in Namibia. This gemmy,
Hemimorphite
$6,500
 Esmeralda Mine, Durango
A superb large cabinet specimen of surface-translucent, bright duck-egg to sky blue botryoidal, bubbly
Diopside var. Chromian Diopside
$400
 Merelani Hills, Tanzania
An attractive thumbnail specimen of gemmy bright lime green Diopside displaying two crystals from the Merelani
Dioptase
$1,200
Dioptase on Calcite is probably the most iconic of species combinations from the legendary Tsumeb mine in
Willemite
$900
 Tsumeb Mine, Namibia
Willemite, a zinc silicate, is known to occur throughout the Tsumeb orebody. This small miniature is formed
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
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
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
Beryl var. Aquamarine
$850
 Barra De Salinas, Brazil
This aesthetic and unusually coloured Aquamarine variety of Beryl is from the granite pegmatites located west
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
Quartz on Chrysocolla
$850
 Globe, Arizona
Hemispheres measuring to 5 mm diameter and botryoidal aggregates of sky blue Chrysocolla are covered by a thin
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
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
Paracelsian
$3,500
 Benallt Mine, Wales
A most special small cabinet specimen of crystallised Paracelsian from Benallt mine on the Lleyn Peninsula of
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
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
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
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
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
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
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
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
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
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
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
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
Hedenbergite
$850
 Nordmark Odal Field (Nordmarksberg), Sweden
This well crystallised miniature Hedenbergite is from the Nordmark Odal Field at Filipstad in Värmland,
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
Andradite Garnet
$5,000
 Serifos Island, Greece
An excellent rich cabinet specimen of Andradite Garnet displaying abundantly intergrown crystals measuring to
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
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,
Hemimorphite on Baryte
$125
 50 fm Flats, England
Golconda mine, west of Wirksworth in Derbyshire, produced both lead and barium in its heyday.  Local
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