Approximate Dimensions .8 -1.25" x .3- .5inches- tooth will vary as this is made to order and natural fossilized tyrannosaurus rex teeth. This is a rare fossilized T-rex (Tyrannosaurus) partial tooth wrapped in your choice of wire which has been intricately woven and spiraled, anchoring to the tooth. The coloration of the teeth is mostly black with some dark brown . T-Rex teeth are a rare find and make great gifts for any fossil hunter or lover of unique jewelry. This fossil was found in the Judith River Formation in Montana and is approximately 67 million years old All of our fossils and fossil jewelry come with a certificate of authenticity and a fact card about the species represented."