Spinosaurus Tooth - Fossil Size:Mini It is a gemstone variety

It is a gemstone variety of chalcedony (a cryptocrystalline form of silica) which contains small quantities of nickel

a book about fossils conceived with deep passion and tons of very detailed edu-scientific information

Stone Type: Citrine

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4mmShaft Diameter: 2

Spinosaurus Tooth - Fossil Size:Mini It is a gemstone varietyMined from: Morocco Era: Mesozoic Geological Age: Approximately 112 to 93 million years ago Description: Spinosaurus is a genus of theropod dinosaur that lived during the Late Cretaceous period. Spinosaurus is one of the largest known carnivorous dinosaurs, estimated to be up to 50 60 feet long. It had a long, crocodile like snout, conical teeth suited for catching fish, and a large sail like structure on its back formed by elongated neural spines.