Over 60 million years ago, massive theropod dinosaurs such as Tyrannosaurus Rex were the apex carnivores of the earth. Today, all that remains are the fossilized remants of their bones. This handsome Rugged Tungsten ring is inlaid with fragments ofred fossil therapod bone from the Hell Creek Formation of Montana and Wyoming. Also made in Serinium (RMSA007808) and Black Diamond Ceramic (RMCA007808) and available in men's and women's sizes, with inside rounded Comfort Fit for wearability.Recalling the mystery and excitement of lost worlds, the Jurassic Collection features rings inlaid with genuine dinosaur bone fossil and iconic ancient life engravings.