Beautiful specimen from Piedra Parada, Las Vigas de Ramirez, Veracruz, Mexico. Parallel formation of amethyst crystals with great transparency and ...

This unique red-orange Crocoite needle-like crystals from Red Lead Mine, Dundas, Tasmania, Australia. The lustrous and clean crystals have high vis...

Libyan Desert Glass is a substance found in areas in the eastern Sahara, in the deserts of eastern Libya and western Egypt. Fragments of desert gla...

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

From Moscona Mine, Villabona District, Asturias, SpainAesthetic penetrating cubic formation of transparent to translucent golden yellow fluorite cr...

This well preserved tooth is 40 to 34 million years old from the Late Eocene Period. Basilosaurus was first thought to be a reptile but was later i...

Genuine Spinosaurus (Dinosaur) tooth. Spinosaurus (meaning "spine lizard") is a genus of theropod dinosaur that lived in what now is North Africa, ...

Carcharodontosaurus (Dinosaur) tooth in a glass display box From Tegana Formation, North Africa. Cretaceous Age 65 million years Carcharodontosauru...

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

A beautiful and free-form shaped translucent quartz clusters from Brazil. This specimen has beautiful lustrous quartz crystals. A great gift and a ...

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

Fire corals (Millepora alcicornis) are members of the Cnidaria phylum, and although fire coral looks like coral, it is a member of the class Hydroz...

  Large, natural trilobite in its original fossil matrix. The Asaphid trilobites include some of the most extreme trilobite adaptations known, and ...

From Mibladen, Atlas Mountains, Khénifra Province, Morocco  An exceptional world-class cluster of hexagonal brick-red Vanadinite crystals with glas...

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

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

Beautiful, snow-white Indonesian Agate Geode.  A beautiful botryoidal crystalized center of a geode, with a hand-polished outer rim of gem calcite ...

AAA quality, rare find translucent perfect bullseye yellow Aragonite stalactite slice. Polished on front and rear sides. Aragonite is a naturally o...

Mosasaurs probably evolved from an extinct group of aquatic lizards known as aigialosaurs in the Early Cretaceous Period (73-65 million years ago...

Mosasaurs probably evolved from an extinct group of aquatic lizards known as aigialosaurs in the Early Cretaceous Period (73-65 million years ago...

Extremely unique ammonite fossil exposing positive and negative with its original matrix. It displays a brilliant opalescence of pink and purple....

Beautiful specimen from Piedra Parada, Las Vigas de Ramirez, Veracruz, Mexico. Parallel formation of amethyst crystals with great transparency and ...

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

Doubly-terminated, stacked cluster of Herkimer Quartz crystals from Herkimer County, New York. This aesthetic specimen, translucent to transparent ...