1.Crafted in 925 Sterling-silver . 2.The silver won't make you allergic, and it won't get color fading ,also it won't turn your skin green. 3.Our sterling silver is electroplated with triple Rhodinum, of which the thickness is up to 3 microns , effectively preventing the silver from getting oxided and tarnished after long time wearing . Product Specifications Jewelry Information Brand, Seller, or Collection Name feelcolor Gem Type Genuine London Blue Topaz Minimum total gem weight 1 carats Setting Prongs Length 10mm Width 8mm Ring Size 6 7 8 9 Total weight 3g Number of stones 1 Model number TR00545 Sterling Silver Metal Sterling Silver (Rhodinum plated 925 sterling silver) Metal stamp S925 Metal Weight 2Grams .Ring Information London Blue Topaz Stone Weight Size 0.9ct(7mm*5mm) Number of stones 1 Stone shape Oval shape Stone Clarity and Color VVS, Blue Stone Creation Method Natural Stone Treatment Method Not Treated Stone Origin Brazil Part of Ring