From Boekenhouthoek area, Mpumalanga Province, South Africa Parallel formation of fully terminated amethyst crystals with a secondary overgrowth of...

Mosasaur teeth come in various sizes and from various species. This specimen is a large, finest grade fossil mosasaur tooth from a Mosasaurus beaug...

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 ...

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

From Jebel Ouichane, Sagangane, Nador Province, L'Oriental Region, Morocco.Here is a superb cluster of these incredible new blue Barites that have ...

From Erongo Mountains, 20 km north of Usakos, Damaraland, Namibia Lustrous transparent aquamarine crystals, the blue-green gem variety of the miner...

From Trantimou, Kayes Region, Mali Lustrous spray of quartz crystal clusters overgrown on black tourmaline. Very nice specimen.   Weight: 24.9 gra...

AAA quality Madagascan free-form of blue chalcedony agate also known as orca stone with white to grey, greyish-blue to nearly black color patterns,...

Top quality polished Heart of blue chalcedony agate also known as orca stone with white to grey, greyish-blue to nearly black color patterns, hand ...

Featuring a polished mirror finish, this top quality Blue Chalcedony Orca Stone Heart from Madagascar (.9 lbs) displays white to grey, greyish-blue...

Top quality polished Heart of blue chalcedony agate also known as orca stone with white to grey, greyish-blue to nearly black color patterns, hand ...

From Tsumeb Mine, Otavi-Bergland District, Oshikoto, NamibiaTop quality specimen of translucent, colorless rhombic calcite crystals in a stacked fo...

Lustrous cluster of rhombohedral formation of calcite with heavy inclusions of brick red hematite. The calcite crystal faces are fully terminated w...

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

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

AAA quality Carnelian agate freeform from Madagascar. This beautiful piece has rich golden-yellow to red-orange color and is hand polished to a smo...

AAA quality Carnelian agate freeform from Madagascar. This beautiful piece has rich golden-yellow to red-orange color and is hand polished to a smo...

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 ...

This is an extremely ornamented member of the trilobites' well-known and globally distributed Lichid family. These trilobites have adapted for ext...

Lustrous rounded cluster of vibrant pink rhombohedral Cobaltoan Calcite crystals. The calcite is translucent to transparent along the edge.  The pi...

Lustrous rounded cluster of vibrant pink rhombohedral Cobaltoan Calcite crystals. The calcite is translucent to transparent along the edge.  The pi...

Lustrous rounded cluster of vibrant pink rhombohedral Cobaltoan Calcite crystals. The calcite is translucent to transparent along the edge.  The pi...