Art Deco Black Onyx Link Bracelet Enameled 12K Gold Filled. This black enameled bracelet hosts bezel set black onyx cabochons in a gold filled metal setting. This bracelet measures 7.25 inches long and 0.5 inches wide. The bracelet is signed JMS and marked 12K GF. There is a slight amount of patina on this bracelet that lends a lovely vintage look. We will gently polish this bracelet upon request of new owner. This estate enamelled bracelet is in very good condition.