Sterling Silver Rhodium-plated Baguette Garnet and White Topaz Ring - 1.66 Carat Gemstone Weight in Sterling Silver - Ring Size Options: 6 7 8 [ Care and Handling: garnet ] - Clean with warm soapy water and a soft brush or cloth. [ Potential Enhancement Methods: white 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: white topaz ] - Clean with warm soapy water and a soft brush or cloth.