Welcome to Tnet! It would help if you have something in your photo to indicate the size of the object. Either a tape measure or coin would be best. Any Markings on it? Have you acid tested it? What sort of I.D. are you looking to get? Manufacturer? It actually doesn't even look like jewelry to me. Looks more like a pull chain for a ceiling fan. Jewelry doesn't usually have that type of hook on the end. Good Luck!