Vintage Boho Filigree Moon Opalescent Belly Button Ring Jewelry materials are certified for body piercing. Piercing Size: 14GA (1.6mm), 3/8" (10mm) Style: Non Dangle Belly Button Ring Material: 316L Stainless Steel (Burnish Finish) Gemstone: High Quality Cubic Zirconia, Faux Opal Glitter