A fiery Gilson opal is encased in a setting of velvety 14k gold with a molten , irregular finish, creating an organic yet delicate stud. Perfect for layering and to be worn as an everyday option for lobe, helix, tragus, and flat piercings . Sold as a single. SIZE & MATERIALS Composition: 14k yellow gold, Gilson opal Measurements: stud: 4x5 mm, threading: 16 gauge (1.2 mm) width, 6.5 mm post length Closure: threaded heart-shaped ball back Read about piercing jewelry and closure systems . Collections Elegant Earrings - Opal Jewelry - Gold Jewelry - Clicker Piercings - Diamond Jewelry - Helix Piercings - Opal Studs Earrings - Lobe Piercings - Flat Piercing - Tragus Piercing - 14k Gold Jewelry - Opal Piercings