The Megalodon sharks tooth is 2 1/2-35 million years old.  I’ve prong set this amazing tooth in sterling silver so you can view the front as well as the back.  There’s a Labradorite stone mounted above to complete this stunning piece!   2” x 3” and hangs on an 18” leather cord.  ( I have a few other lengths of necklaces if you need a longer one.