Acanthopyge is an extinct genus of lichid trilobite that lived during the Devonian. This is a very nice, 1" long lichid (Acanthopyge) trilobite fro...

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

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 ...

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...

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 ...

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

From Red Lead Mine, Dundas, Tasmania, Australia Colorful specimen of bright red-orange translucent crocoite crystals on brown gossan with minor yel...

From Dundas, Tasmania, Australia   Bright translucent red-orange  terminated thick crocoite crystal embedded in metallic botroiydal hematite matrix...

From Berg Aukas Mine, Grootfontein, Otavi Mountain Land, Namibia   This specimen has lustrous and transparent dark-brown Descloizite crystals in a ...

From Berg Aukas Mine, 16 km ENE of Grootfontein, Otavi Mountain Land, Namibia Lustrous, well crystallized black-brown descloizite crystals in arrow...

from Hunza Valley, Gilgit-Baltistan, Pakistan   Transparent to translucent deep pink hexagonal fluorapatite crystal on an intergrown cluster of mus...

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

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

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

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

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

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

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

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