Sterling silver, sterling silver with black rhodium finish Bi color tourmaline; diamonds, approximately 1.32 carats 18" chain length, 5.3mm curb chain link width Lobster claw clasp closure Butterfly pendant measurements: 37.7mm x 48mm One of a Kind WEB EXCLUSIVE - This design is not available in any other retail locations. Designed and handmade in California Style number: SNB00008