Bear tooth is 3" Tieable necklace that fits all Â Beautiful Authentic bear tooth on this necklace Runes used are: Odin, Sun, Thor, Necessity Please note teeth crack, they crack when exposed to hot and cold, when wet to dry, when altitude changes, whenever they damn well please. They can not be guaranteed from cracking. I highly recommend getting a claw... It will last you a lot longer, a tooth will at one point crack... It's just how they are!