Sterling Silver Rhodium Light Swiss Blue Topaz Diamond Ring - Size 7 - .01 Carat Diamond Weight 6.70 Carat Gemstone Weight in Sterling Silver - Product Attributes: - Blue topaz - Diamond - Polished - Band Width: 2 mm - Feature: Solid Genuine ; Open back ; Polished - All of our jewelry for women and men are authenticated with a 10K or 14K hallmark and are tested to pass FTC regulations. ::: ::: [ Care and Handling: diamond ] - Clean with warm soapy water and a soft brush or cloth. ::: ::: [ Potential Enhancement Methods: blue topaz ] - Usually irradiated and heated to produce color. Some topaz may be coated with a thin film of minerals applied through heat. ::: [ Care and Handling: blue topaz ] - Clean with warm soapy water and a soft brush or cloth. :::