Beautiful cluster of lustrous yellow-metallic pyrite crystals. The pyrite crystals are mostly cubic form with pyritohedral edge faces.    53.1 gram...

Crinoids are found in almost every bedrock unit in Indiana, including the famous Indiana Limestone. "Sea Lily" is the common name for crinoids, whi...

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

From Tegana Formation, North Africa Cretaceous Age 65 million years Carcharodontosaurus is one of the longest and heaviest known carnivorous dinosa...

Mosasaurs are an extinct group of large marine reptiles. Their first fossil remains were discovered in a limestone quarry at Maastricht on the Meus...

Mosasaurs are an extinct group of large marine reptiles. Their first fossil remains were discovered in a limestone quarry at Maastricht on the Meus...

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

Beautiful top quality hand-polished natural Imperial Rhodonite egg from Madagascar. It has an amazing pattern with vibrant hues of pink and red.  ...

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...

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...

Translucent cubic purple fluorite crystals overgrown on top of a cluster of metallic luster sphalerite crystals. The fluorite surfaces are composed...

Red Quartz Hematite crystal cluster from Izizauen Alnif, Tarhbalt, Morocco. New 2014 find of lustrous brick red hematite included quartz crystal cl...

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

From San Eugenio, Artigas Dept., Uruguay Unusual 7'' elongated rhombic calcite crystal with modified terminations on gem amethyst crystal matrix. T...

Beautiful specimen from Piedra Parada, Las Vigas de Ramirez, Veracruz, Mexico. Lustrous transparent purple amethyst quartz crystals on matrix. The ...

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 Huanzala Mine, Huallanca District, Huanuco Department, Peru Beautiful lustrous golden metallic Pyrite crystal cluster with well defined octahe...

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