Material:International standard 925 silver. Design:Simple fine,the ring is 1 mm thick,opening ring can be adjusted 53mm-58mm(perimeter). Process:Gold plating, polishing, transparent coating is not easy to fade. Design story: we want to design a jewelry with fashion and simple. We hope that on any occasion she can accompany you, cocktail party, party or go shopping, travel, whether you dressed in high-end dress, tooling or sport sweater, our small accessories are able to foil your beauty is just perfect. Features: Electroplated coatings were separately plated with rhodium gold (Platinum), 14K gold (gold) and 18K rose gold (rose gold) with three layers. Rounded edges, comfortable to wear, skin protection. 1.2 mm ultra fine design can be used for different design combinations. The outer layer is plated with environmental protection transparent protective layer, and the color is more durable.