Dormith&reg; 925 Sterling Silver Synthetic Blue Fire Opal Sea-maid Pendant Necklace for Women 16''-18'' Adjustable Dormith 925 Sterling Silver blue Fire Opal Sea-maid Pendant Necklace Material:925 sterling silver,platinum plated;synthetic fire opal.cubic zirconia. Pendant size:32*15mm;Thickness:3mm.Silver chain length is 16-18 inches,Total weight:5.02g Tarnish-free and anti-allergic, lead-free. Guaranted authentic, money-back satisfaction guaranted by Dormith. Designed by Dormith.makes you life more beautiful.