Dormith&reg; 925 Sterling Silver Synthetic Blue Fire Opal Dolphin Pendant Necklace 16''-18'' Adjustable Dormith 925 Sterling Silver Synthetic Blue Fire Opal Dolphin Pendant Necklace 16''-18'' Adjustable Material:925 sterling silver,platinum plated;Synthetic Blue fire opal.cubic zirconia. Pendant size:25*15mm,Thickness:3mm;Silver chain length is 16-18 inches,Total weight:4.8g Tarnish-free and anti-allergic, lead-free. Guaranted authentic, money-back satisfaction guaranted by Dormith Exclusive Craftsmanship and Styling by Dormith.makes you life more beautiful.