Dramatic and exotic carved pendant necklace is made of shimmering obsidian beads connected with metal links; the pendant is also obsidian. This is a very substantial piece with just the pendant alone measuring almost 3 inches in length! The necklace portion measures just over 24 inches long. Overall condition is fine with the exception of one tiny mark on the back of the pendant; it is not a nick but a discoloration. Obsidian is a glassy black substance formed when lava cools in a short amount of time. It is used for making lots of items including jewelry and even scalpels.