BodySparkle Body Jewelry A-Gorgeous Imitation Blue Opal Sun Belly Button Ring 14 gauge 3/8 Steel Barbell-Non Dangle Navel Ring 14 gauge, 3/8 inch curved barbell. Externally Threaded Top Ball Piercing Jewelry-Body Jewellery Bars and Hoops for Women, Men and Teens Photo enlarged to show detail. Beautiful Blue Imitation Opal Belly Button Ring. Sun Belly Ring is perfect for the beach this summer! Perfect for most navel piercings and belly button piercings that require an average length barbell