Sterling Silver With 14k London Blue Topaz Ring - Size 7 - 3.20 Carat Gemstone Weight in 14k Yellow Gold and White Gold - Finish: Antiqued - Feature: Solid Antique finish ; Genuine ; Polished - All of our jewelry for women and men are authenticated with a 10K or 14K hallmark and are tested to pass FTC regulations. ::: [ 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. :::