Real lava rock from Iceland that I wirewrapped with 14K gold filled wire and a tiny red Swarovski crystal. The lava is from an eruption thousands of years ago. This is a small lava rock pendant that comes on a black rubber 18 inch necklace with an easy push clasp. (A 14K gold filled 18 inch necklace would cost an additional $40. Please contact me to order that option). A unisex design. Thank you for visiting and good luck!