Pearl Size: 8 mm - Metal Drop Length: 12.5 mm - Metal Drop Width: 11 mm - Metal Drop Thickness: 2.8 mm Freshwater Pearl We use cultured pearls from oysters and freshwater mussels that we carefully select for our pieces. Pearls are sensitive in nature, so don’t forget to treat them with love. Sterling Silver 925 Sterling Silver is a lightweight metal made of 92.5% pure silver. It’s highly durable and designed for everyday wear.