Geological Siderite on White Calcite Mineral Specimen

A fine specimen of white calcite crystals formation, in white card tray with label reading: 'WHITE CALCITE, Chihuahua, Mexico'. 14 grams, 29mm (1"). From the historic ‘Victorian Museum’ and later

A fine specimen of wulfenite consisting a sheet of numerous tabular orange crystals on a matrix of limestone with an underlying sheet of white calcite? From the historic ‘Victorian Museum’ collect

Extra Small Purple Fluorites on Quartz Crystals Brown Dogtooth Calcites with White Calcite Plates Mexico 5oz

Rare Red Hemimorphite on Red & White Calcite Mexico

A group of ten optical calcite specimens, each held in a white card collector's tray. 170 grams total, 18-22 mm (5/8 - 7/8 in.) Durango, Mexico. Mineral Imports, London, UK. Gregory, Bottley & Lloyd (

A fine specimen of a finely cut block of orange calcite, in white card tray with label reading: 'Calcite, Mexico'. 20 grams, 26mm (1"). From a historic ‘Victorian Museum’ collection; from the stoc

A fine specimen of a deep purple amethyst crystals on a matrix, with smaller calcite crystals overgrown to the centre and one corner; in white card tray. 382 grams, 10.2cm (4"). From a historic ‘Vic

A fine specimen of a hexagonal calcite crystal on a pyrite and galena matrix, in white card tray. 39 grams, 37mm (1 1/2"). From a historic ‘Victorian Museum’ collection; from the stock of Gregory,

A geode section containing richly-coloured amethyst crystal with two clusters of translucent opaque crystals; supplied in a white cardboard tray. 220 grams, 85mm (3 1/2"). From the historic ‘Victori

2 1/4 in. (118 grams, 59 mm)DESCRIPTION:A mineral specimen composed of galena with calcite, held in a white card collector's tray.[No Reserve]PROVENANCE:Tri-State, USA.Mineral Imports, London, UK.Greg

2 specimens with bases. Includes Gobi stone intricately wind carved chalcedony 4.5 x 3 x 2 ; stalactitical calcite cluster coral like structure white finely crystalline 4 x 3 x 3 China Chunlin Zhu Col

A group of thirteen mineral specimens, including one jointed twin geode, one septarian nodule from Utah with a yellow calcite centre, brown aragonite or siderite lines, and limestone encasing, one Ger

A specimen of vanadinite with calcite, the vanadinite crystals transparent and lustrous, from Mexico, in old white card tray with handwritten label reading: 'Durango, Mexico'. From Durango, Mexico; fr

3/4 - 1 1/4 in. (155 grams total, 19-32 mm)DESCRIPTION:A group of 14 white calcite specimens, each held in a white card collector's tray.[14, No Reserve]PROVENANCE:From Mexico.Mineral Imports, London,

A sphalerite matrix with small clusters of yellow mimetite crystals and large white hexagonal calcite crystals; supplied in a cardboard specimen tray. 150 grams, 71 mm (2 3/4 in.). Mineral Imports, Lo

A fine specimen of calcite and chalcopyrite crystals on matrix, with smaller sections of galena; in white card tray with label reading: 'Calcite, Chalcopyrite and Galena, Tri State (Miller Collection)

Geological specimen, septarian geode (yellow calcite, brown aragonite, gray limestone and white or clear barite) carved and polished into a heart shape 5"h x 8&#34

(lot of 3) Geological specimen geodes, including: (1) egg-form septarian, with crystallized minerals to interior (likely calcite or aragonite); (1) purple amethyst specimen; (1) round-form geode, with

Rock and Mineral Assortment Approximately (12) pounds of a variety of specimens mounted on white tiles; including samples of quartz, fluorite, gypsum, malachite, calcite and fossils; some labeled Heig

Rare amazing natural piece on custom stand 18"; 25 pounds 54 Kg

DescriptionMaterials: celestine, calciteBlue Celestine Crystals With Calcite Mineral Specimen From Baghdis, AfghanistanWeight: 85.25 CaratsSize : 38*26*17 mmOrigin : Baghdis, AfghanistanTreatment : Na

Materials: Terminated Celestine with Calcite 5 Grams Very Beautiful Terminated Celestine with Calcite mineral Specimen From Afghanistan Size 2 CM X 1.4 CM X 1.6 CM Reserve: $75.00 Shipping: Domestic:

Pyrite or fool's gold cluster on a calcite matrix mineral specimen, together with a lucite stand with four fitted brass arms. 4.5" H x 4" W x 3.5" D on stand.

A rectangular pale-blue calcite crystal; supplied in a display case with old collector's identification label. 11.4 grams total, 19mm (box: 34 x 40 x 35mm) (3/4 (1 1/4 x 1 1/2 x 1 1/2)"). From the his