Geological Nail Head Calcite Mineral Specimen

A cluster of fine, lustrous pyrite crystals form the classic Peruvian locality, crystallising principally as pyritohedrons, with accessory nailhead calcite and a sprinkling of small sphalerites, in ol

A sheet of tabular and nailhead calcite crystals from the famous Bulgarian locality. See Bonewitz, Dr. Ronald Louis, Rocks & Minerals, 2008, p.227-231. 795 grams, 19cm (7 1/2"). Property of a Gloucest

Group of calcite (Calcium Carbonate) specimens, in varying crystal forms, all from Mississippi Valley Type deposits, probably from the Southeast Missouri Lead District around Fredericktown (where this

(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

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

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 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 group of four quartz crystal on matrix specimens, and one calcite on matrix, from the Rodopi Mountain region, Bulgaria. See Bonewitz, Dr. Ronald Louis, Rocks & Minerals, 2008. 9.2 kg, 8-21cm (3 1/4

A group of unusually formed, frosted calcite crystals on matrix. From India; From the historic ‘Victorian Museum’ and later collection of Gregory, Bottley & Lloyd (Gregory's); formerly Gregory, Bo

A large sheet of small, acicular calcite crystals on matrix. See Bonewitz, Dr. Ronald Louis, Rocks & Minerals, 2008, p.177. 725 grams, 22cm (8 3/4"). From the historic ‘Victorian Museum’

Natural Phantoms Fluorite Crystal with Calcite Mineral Specimen From Pakistan - Weight : 522 Gram Size : 90*87 mm Treatment : Natural Origin : Baluchistan Pakistan DHL Express Shipping Reserve: $250.0

Calcite with Marcasite Phantoms Linwood Quarry Buffalo, IA 2lb 8oz

Calcite Buffalo, IA 2lb 14oz

Marcasite Phantom Calcite Missouri 2oz

Calcite Clusters Buffalo, Iowa 8oz

Honeycomb calcite geological specimen, mounted on an acrylic base, specimen: approx 14.5"h, 10"w, overall: approx 16"h, 10"w, 4.25"d, 11lbs Start Price: $150.00

Title: 528g Beautiful Natural RED Calcite Crystal Cluster Mineral Specimen/China Specimen: Calcite Carat Weight: 2640 Carats Dimensions: 86x69x110 MM Reserve: $85.00 Shipping: Domestic: Flat-rate of

Malachite mineral specimen geological sample, mounted on a wooden plinth, with label reading: "$950 Malachite Sculpt., etc.". 11" H x 11.5" W x 12" D.