Tyrannosaurus Rex Bone Fragment - Fossil Specimen charcoal Its scientific relevance lies not

Its scientific relevance lies not just in its age

Although dioptase is not especially hard

the crystal shows good transparency in places

these fluorites have quietly earned a following for their unique surface effects and crisp geometry

Tyrannosaurus Rex Bone Fragment - Fossil Specimen charcoal Its scientific relevance lies notMined from: Hell Creek Formation, South Dakota, U. S. A. Era: Mesozoic, Late Cretaceous Geological Age: 66 68 mya Description: This one of a kind fossil bone fragment comes from the Hell Creek Formation, one of the most famous Late Cretaceous dinosaur bearing formations in North America. The piece has a rugged, vertical display shape with dark brown to earthy tan fossilized bone texture, visible cracking, layered surfaces, and natural weathering