Ptychopariida is a large, heterogeneous order of trilobite containing some of the most primitive species known. The earliest species occurred in th...

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

From Nuestra Señora del Carmen Mines, La Celia lamproite outcrops, Jumilla, Murcia, SpainLustrous interconnected purple-gray crystals with minor ma...

 from Elmwood Mine, Carthage, Smith County, Tennessee   Transparent 3d cubic transparent purple fluorite crystals overgrown atop a cluster of metal...

This amazing stalactite formations are the height of beauty, with glittering druzy crystalline blossoms covering a cluster of long, finger-like pro...

From Mibladen, Atlas Mountains, Khénifra Province, Morocco   An exceptional cluster of hexagonal crystals of bright red Vanadinites. This specimen ...

Xianghualing-Xianghuapu Mines, Hunan, China Unusual, unique one of a kind specimen of calcite on purple green fluorite. Cubic fluorite crystals in ...

Top quality natural flat bladed (laminar) formation of blue ridge coral. Heliopora coerulea is a unique species of coral in the wild and great to u...

This Brazilian clear quartz crystal point is of top museum quality, with a polished mirror finish on all sides. Known as the "stone of power," it a...

Top quality natural formation of gem amethyst variety quartz cluster with lustrous fully terminated crystals with highly reflective faces and deep ...

This expertly polished Smoky Quartz sphere from Brazil is a museum quality and boasts high levels of transparency and reflectivity, making it a val...

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

Stunning 309.5ct custom cut oval Smoky Quartz gemstone is a one-of-a-kind. This gorgeous oval cut smoky quartz is a deep mysterious shade of brown....

An aesthetic specimen of a 12" gem transparent gypsum var. selenite crystal on druzy matrix. The specimen has top quality transparency with a glass...

Brittle stars, or ophiuroids, are echinoderms in the class Ophiuroidea, closely related to starfish. They crawl across the sea floor using their fl...

Red Quartz Hematite crystal cluster from Izizauen Alnif, Tarhbalt, Morocco. Cylindrical stalactite of calcite crystals mixed with red hematite.  He...

This authentic Carcharodontosaurus tooth represents a remarkable specimen from the Tegana Formation of North Africa, dating back approximately 65 m...

From Nasik District, Maharashtra, India Lustrous cluster of intersecting acicular sprays of scolectite crystals with Stilbite matrix. The scolecite...

Top quality natural flat bladed (laminar) formation of blue ridge coral. Heliopora coerulea is a unique species of coral in the wild and great to u...

This alien-looking trilobite, known as Ceratarges ziregensis, has a strikingly otherworldly appearance. It's difficult to believe that this creatur...

Here is stunning blue botyroidal formation of powder blue translucent hemimorphite on matrix. The hemimorphite has a scintillating surface composed...

This is a beautiful sphere made from Brazilian blue quartz. The entire sphere has been flawlessly polished to a glossy-finish and is accompanied by...

From Mibladen, Haute Moulouya Basin, Zeida-Aouli-Mibladen belt, Midelt Province, MoroccoTranslucent golden cerussite crystals scattered over orange...

From Edong Mining District, Daye, Hubei, Chinarict, Kosovo This extraordinary Calcite specimen discovered in China features an impressive, one-of-a...