mineralists:Lavender Celled Gemmy Dinosaur BoneAgatized fossilized dinosaur bones are petrified with
mineralists:Lavender Celled Gemmy Dinosaur BoneAgatized fossilized dinosaur bones are petrified with silica or quartz crystals which gives them their colorful, glassy appearance. This process preserves the actual cell structure of the once living dinosaur. -- source link