From Tsumeb Mine, Otavi-Bergland District, Oshikoto, Namibia Large crystals of dark smoky rutile with minor matrix on the bottom. The rutile crysta...

Transparent green cubic fluorite crystals with slightly textured crystal faces that are composed of microscopic octahedral faces. The bright green ...

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...

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

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

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

AAA quality, lustrous gem translucent yellow fluorite polished point. This specimen has bright rich honey yellow color and displays a base of ether...

AAA quality, hand-polished flame free-form of natural gem translucent rose quartz from Brazil. This specimen has bright rich color, all sides hand ...

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

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

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

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

Lustrous large gem transparent crystals of blue Celestite. Has a few large crystals with prism faces and chisel-shaped terminations. This specimen ...

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...

Trilobites, an early arthropod relative of spiders, horseshoe crabs, and scorpions, preserved in this level of detail only occurred as a result of ...

Trilobites, an early arthropod relative of spiders, horseshoe crabs, and scorpions, preserved in this level of detail only occurred as a result of ...

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

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

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

Spinosaurus (meaning "spine lizard") is a genus of theropod dinosaur that lived in what now is North Africa, during the upper Albian to upper Turon...

Spinosaurus (meaning "spine lizard") is a genus of theropod dinosaur that lived in what now is North Africa, during the upper Albian to upper Turon...

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

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