From San Eugenio, Artigas Dept., Uruguay   Large 7'' x 3.5" scalenohedral crystal of calcite on amethyst matrix accented by isolated cluster of col...

From San Eugenio, Artigas Dept., Uruguay Large 6'' sharp scalenohedral crystal of Calcite centered on matrix of grape purple translucent to transpa...

From Nasik District, Maharashtra, India   Large translucent double penetrating twinned crystals of calcite on translucent to transparent apophyllit...

Lustrous transparent deep golden calcite crystal on matrix. Large double terminated scalenohedral twinned on the C-axis with well defined re-entran...

Large 6" penetrating twinned crystals of transparent rich golden yellow calcite with silky luster faces and sharp terminations on druzy quartz matr...

Lustrous vibrant orange-yellow showy, sharp "Porcupine" calcite cluster. The calcites are perfectly terminated and damage free.   Weight: 4.7 lbs, ...

 Pune District, Maharashtra, India   Large cabinet geode of bright pink heulandites in translucent wheat sheave aggregates intergrown with pink sti...

From San Eugenio, Artigas Dept., Uruguay   Large 7'' x 3" scalenohedral crystal of calcite on amethyst matrix accented by isolated cluster of color...

Large, museum-quality, lustrous transparent deep golden calcite with small sphalerite crystal at the base of the crystal. Double terminated scaleno...

This extraordinary Calcite specimen discovered in China features an impressive, one-of-a-kind display with a special characteristic - three pointed...

From Casapalca District, Huarochiri Province, Peru Large lustrous striated cubic yellow-metallic pyrite crystals with black-metallic sphalerite cry...

From Leiping Mine, Guiyang, Hunan, China Internally flawless crystal cluster of optical-grade colorless calcite on gossan matrix. The calcite cryst...

From Edong Mining District, Daye, Hubei, China Cluster of sharp scalenohedral calcite crystals partially covered with lustrous iridescent metallic ...

From San Eugenio, Artigas Dept., Uruguay   Large 6'' scalenohedral transparent calcite scepter crystal on matrix  with lustrous translucent grape p...

From Anahi Mine, La Gaiba District, Angel Sandoval Province, Santa Cruz Department, Bolivia Large purple crystals of amethyst quartz 6–12" diameter...

From Leiping Mine, Guiyang, Hunan, China Internally flawless crystal cluster of optical-grade colorless calcite on gossan matrix. The calcite cryst...

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

From Pingwu beryl mine, Huya township, Mount Little Xuebaoding, Pingwu Co., Mianyang, Sichuan, China Yellowish-brown rhombohedral siderite crystals...

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

From Edong Mining District, Daye, Hubei, China Cluster of sharp scalenohedral calcite crystals partially covered with lustrous iridescent metallic ...

Large, museum-quality, lustrous transparent deep golden calcite with small sphalerite crystal at the base of the crystal. Double terminated scaleno...

A massive, 52 lb geode with large rhombic Calcite crystals beside a pseudomorphic quartz after Calcite crystals with pink Heulandite crystals in a ...

From Huanggang Mine, Kèshíkèténg Qí, Chifeng, Inner Mongolia, China Lustrous translucent gray-white with transparent colorless calcite crystals.  ...

From Indonesia Lustrous vibrant orange-yellow showy, sharp "Porcupine" calcite cluster. The calcites are perfectly terminated and damage free.   10...