Fordite, also known as Detroit agate or Motor City agate, is old automotive paint which has hardened sufficiently to be cut and polished. It was formed from the buildup of layers of enamel paint slag on tracks and skids on which cars were hand spray-painted. Fordite is now cut and polished by lapidary artists and highly sought after in art jewelry. Theresa Kwong artfully combines the beauty of these unique Fordite gems with her expert silversmithing. This handsome key fob measures about 2" long and hangs on a standard steel key ring.