StarGems(tm) Sterling Silver Natural Black Onyx Necklace Antique Style Pendant 1 3/4" 100% Solid Sterling Silver with 925 stamp, Total Weight(grams): 16.8g Guaranteed authentic gemstone(s), Exclusive craftsmanship and styling, actual item pictured, Main stone size: 18 X 26mm Exclusive craftsmanship and styling, actual item pictured Free Anti-Tarnish Silver Polishing Cloth ships from Hongkong via USPS First-Class Package International Service with Tracking Number