Golden Opalescent Abalone Dangle Belly Button Ring Jewelry materials are certified for body piercing. Piercing Size: 14GA (1.6mm), 3/8" (10mm) Style: Dangle Belly Button Ring Material: 316L Stainless Steel (Gold Plated), Natural Abalone Gemstone: High Quality Cubic Zirconia, Faux Opal Glitter