Here is a set of four beads made from fossilized shark teeth. They are each approximately 1/2" long x 1/2" wide. They have a great look and would be wonderful on a bracelet, necklace or decorating a piece of clothing.
These fossil shark teeth were found on the West Coast of Florida. They are 20 - 30 million years old and from a shark in the genus Carcharinus, that includes bull sharks and related species.