Solid Sterling Silver Rhodium Plated Blue Natural Larimar Turtle Pendant Necklace, 16" 18" 20" 24" Unsure what length chain to buy? 18 inches is the standard length and will look great on most people To purchase the pendant by itself (without a chain), choose the "0.0 inches" length This necklace is made of solid rhodium plated sterling silver, featuring natural blue Larimar. Our natural blue Larimar has beautiful color that gives off a fun beach jewelry vibe. Pendant measures 29mm (1.14 in) x 18mm (0.81 in). The approximate weight is 6g.