Solid Sterling Silver Rhodium Plated 3mm, 4mm, or 5mm Rosary Chain Necklace, 20" This necklace is made of solid rhodium plated sterling silver and stamped "925". Necklace itself is 20 inches long, plus 4 inch dangling part with cross. Comes in size small (beads 3mm), medium (beads 4mm) or large (beads 5mm).