(internal #DF-370-18), One slice of genuine DINOSAUR bone, 6-1/4" long x 4-3/4" wide. Weights: 1 lb 2 oz DINOSAUR BONE SLICES Lightly coated with polyurethane on one side to show off the color. SMALL-MEDIUM (sizes as indicated) and priced as indicated Thickness: 3/16? to 1/4? average unless indicated; Flat on back unless indicated From the Morrison Formation in Utah. This formation covers 600,000 square miles over several states, the most fertile source of dinosaur fossils in North America. These bone specimens date back to the Jurassic Era, 155-148 million years ago. It has a unique dot pattern, keeping its original pattern though it petrified into stone as jasper and agate as it fossilized. Comes with full information card. Can be final polished or varnished with clear polyurethane or clear fingernail polish with brush or spray to show the distinct dinosaur bone pattern color the best as a display item or as jewelry. All are solid suitable for lapidary/cutting for jewelry, or simply as they are for beautiful prehistoric specimens for collectors. Cut flat front back unless indicated WE SHIP WORLDWIDE, see the chart for postage to your country.