Product Description Metal: 925 Sterling Silver Size: US Size 7-9 Adjustable Weight:5g Stamped :S925 Report: Don't offer certified report,But All Of my items are tested before i get it from factory,you also can retest when you get it.The quality must be guaranteed. Comment: We sell is quality.Please rest assured to buy.Customer is Number one Important.Welcome to give any advice,we will do best. sku;CZ304-26-09