... GR7 GR9 GR10 (2).Useage:men and women (3).Color:silver (4).Purity:99.8% (1).Place of oriin:Shaanxi,China ... , sandblasting,enamel, incision, inlay etc.IP colorgold, rose gold ,black,coffee,silver,bronze, blue...keep 3-5years no fadingLogo finishlaser, print, corrosion ...