A slice of cave stalactite reveals layers of mineral deposits that tell a unique story like the rings of a tree. Cut and polished on the inside, the rough outer edges are held by hand-cut prongs. No two stalactite slices are ever the same so each setting is cut specifically for the stone. Your necklace will be totally one-of-a-kind.This necklace is plated in 14k gold to prevent tarnishing.