Beauniq Sterling Silver Rhodium Plated Beaded Necklace, 18" This necklace is made of solid rhodium plated sterling silver and stamped "925". The necklace is made of lightweight hollow sterling silver beads strung on a solid sterling silver chain. Necklace comes in: - 5mm thick / 18 inch long (weight: 10.6g) - 6mm thick / 18 inch long (weight: 11.7g).