Bold blue dinosaur bone ring in sterling silver created by Hileman Silver Jewelry. The 5 big inlay sections of dinosaur bone really show off the color and pattern of the bone in this remarkable ring. The dinosaur bone used in this ring is typically referred to as "blue" in dinosaur bone terms but is really more of a blue gray color. This blue fossilized dinosaur gem bone came from the Morrison Formation in the Colorado Plateau and was a living dinosaur during the Jurassic Period around 144 to 208 million years ago. Only a small percentage of the dinosaur bone found is highly agatized like this bone and blue bone is also very rare. This unique dinosaur bone ring measures about 10mm wide at the top, with a slight taper toward the bottom and is shown in a size 10 1/2 for scale. This ring will be made to order in your specific ring size in 4 to 6 weeks- depending on our work load. This ring style is also a popular choice for a man's wedding ring. This ring is style number M210ssBlueDino. A matching woman's band (or gent's) in several width choices could be made to make a nice dinosaur bone wedding ring set. The 4th photo shows the same ring inlaid with gray dinosaur bone and lab created opal as an option.