Metal - Gold Plated Over 925 Sterling Silver Black Onyx - (Gemstone Composition - Natural, Enhancement - Dyed) Gold-tone double-strand necklace. The necklace has two strands of gold-toned chains, each with small, round, black onyx beads strung along them. The double-strand design sits close to the base of the neck. The chains are fairly thin, with evenly spaced beads.One of the strands has a noticeable drop, or extender, which is a separate chain with beads. The drop chain has a gradually lengthening path, with the same style and size beads as the double strand chains from the central section.