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

from Moscona Mine,Solis, Corvera de Asturias, Villabona mining area, Spain Translucent rhombehdral crystals of colorless calcite large matrix of tr...

Spherical cluster of lustrous yellow-metallic pyrite crystals fully crystallized on all faces except with quartz crystals. The pyrite crystals are ...

Galena from Krushev Dol Mine, Madan District, Rhodope Mountains, Bulgaria Bright metallic galena crystals with mirror-like surface luster with mino...

Top quality, center-of-a-choice petrified wood egg from Madagascar. This incredible specimen is hand-polished and formed to an egg shape. It has an...

Top quality, center-of-a-choice petrified wood egg from Madagascar. This incredible specimen is hand-polished and formed to an egg shape. It has an...

Top quality, center-of-a-choice petrified wood egg from Madagascar. This incredible specimen is hand-polished and formed to an egg shape. It has an...

From Chenzhou Prefecture, Hunan Province, China Translucent pale-pink crystals of sharp flattened rhombohedral manganoan calcite in parallel format...

From Chenzhou Prefecture, Hunan Province, China Translucent pale-pink crystals of sharp flattened rhombohedral manganoan calcite in parallel format...

From Guilin Prefecture, Guangxi Zhuang Autonomous Region, China Aesthetic stalactitic formation of translucent tanish-orange scalenohedral calcite ...

Beautiful specimen from Piedra Parada, Las Vigas de Ramirez, Veracruz, Mexico. Several purple amethyst quartz crystals on matrix with epidote micro...

Beautiful specimen from Piedra Parada, Las Vigas de Ramirez, Veracruz, Mexico. Many amethyst quartz crystals on matrix. The color varies from pink-...

Beautiful specimen from Piedra Parada, Las Vigas de Ramirez, Veracruz, Mexico. Lustrous deep-purple transparent amethyst quartz crystals surrounded...

From Mibladen, Atlas Mountains, Khénifra Province, Morocco  Here is an exceptional world class specimen of a cluster of hexagonal crystals of brigh...

From Mibladen, Atlas Mountains, Khénifra Province, Morocco  Here is an exceptional world class specimen of a cluster of hexagonal crystals of dark ...

From Mibladen, Atlas Mountains, Khénifra Province, Morocco  Here is an exceptional world class specimen of a cluster of hexagonal crystals of dark ...

Superb specimen of translucent red-brown Chocolate heulandite in a doube terminated wheat sheave aggregates with lustrous crystal faces on chalcedo...

Superb water-clear wedge-shaped barite crystals covering one face of tan-colored matrix. The barite crystals formed over botryoidal black oxide min...

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

Large shallow vug with a transparent penetrating twinned golden calcite on druzy chalcedony matrix in stalactitic formations with several isolated ...

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

Lustrous transparent powder blue thin pyramidal crystals in parallel formations on matrix inter grown with several isolated crystals of calcite in ...

Large 2.5 inch metallic lustrous cubic Spanish Pyrite crystal on matrix. This specimen has sharp, well-defined terminations where the crystal faces...

From Shigar Valley, Skardu, Baltistan, Gilgit-Baltistan, Pakistan Lustrous transparent orange-brown complete topaz crystals frozen in white surroun...