From Shaba Copper Belt, Katanga (Shaba) Province, Democratic Republic of the Congo (Zaire) A sculptural botryoidal formation of solid velvety green...

From Shaba Copper Belt, Katanga (Shaba) Province, Democratic Republic of the Congo (Zaire) A sculptural botryoidal formation of solid velvety green...

From Jalgaon District, Maharashtra, India    Doubly-terminated cluster of pristine pale-yellow stilbite crystals on matrix. The stilbite crystals a...

From Jalgaon District, Maharashtra, India  Classic example of cream colored cluster of colorless bowtie stilbite crystal on matrix. Stilbite crysta...

From Jalgaon District, Maharashtra, India    Classic example of wheat-sheaf-shaped cluster of colorless bowtie stilbite crystals. Stilbite crystals...

Milpillas Mine, Cuitaca, Sonora, Mexico Large cabinet specimen of acicular vivid green crystals of brochantite lining one side of gray matrix. The ...

From Qilla (Killa) Saifullah Chrome Mines, northwestern Baluchistan, Pakistan Large elongated cluster of lustrous transparent-to-translucent lemon-...

From Qilla (Killa) Saifullah Chrome Mines, northwestern Baluchistan, Pakistan   Lustrous hemispherical cluster of transparent-to-translucent lemon-...

From Qilla (Killa) Saifullah Chrome Mines, northwestern Baluchistan, Pakistan   Lustrous hemispherical cluster of transparent-to-translucent lemon-...

Fossilized psuedomorph of calcite after ammonite halve to reveal the internal chambers lined with calcite crystals. The ammonite has been internall...

Fossilized psuedomorph of calcite after ammonite halve to reveal the internal chambers lined with calcite crystals. The ammonite has been internall...

Fossilized psuedomorph of calcite after ammonite halve to reveal the internal chambers lined with calcite crystals. The ammonite has been internall...

Fossilized psuedomorph of calcite after ammonite halve to reveal the internal chambers lined with calcite crystals. The ammonite has been internall...

Fossilized psuedomorph of calcite after ammonite halve to reveal the internal chambers lined with calcite crystals. The ammonite has been internall...

from Leiping Mine, Guiyang, Hunan, China Translucent calcite crystals with red-brown color due to microscopic hematite inclusions. Several V-twinne...

From Tsumeb Mine, Otavi-Bergland District, Oshikoto, NamibiaTop quality specimen of translucent, colorless rhombic calcite crystals in a stacked fo...

From Nasik District, Maharashtra, India Lustrous Large transparent yellow rhombohedral calcite crystal with textured striated crystal faces. Most o...

This fascinating specimen formed when gemmy calcite crystals grew in the natural pocket formed by a buried fossil clamshell. The interior of the sh...

This fascinating specimen formed when gemmy calcite crystals grew in the natural pocket formed by a buried fossil clamshell. The interior of the sh...

From San Eugenio, Artigas Dept., Uruguay   Large 4'' x 2.5" scalenohedral crystal of calcite on amethyst matrix accented by isolated cluster of col...

From San Eugenio, Artigas Dept., Uruguay Large 7''  scalenohedral crystal of calcite on amethyst matrix accented by isolated cluster of colorless q...

Moscona Mine, Villabona, Asturias, Spain This Item Has Already Been Purchased By A Collector

Xianghualing-Xianghuapu Mines, Hunan, China Unusual, unique one of a kind specimen of calcite on purple green fluorite. Cubic fluorite crystals in ...

From Bombay Quarry, Mumbai (Bombay), Maharastra, India Two large calcite on hemispherical formation of thin needle like colorless mesolite crystals...