A crescent of sapphires in a molten bezel setting perfectly accentuates the natural curves of the ear in this versatile stud. Sold as a single. SIZE & MATERIALS Composition: 14k yellow gold, sapphire Measurements: Stud length 11mm, threaded back post thickness: 16 gauge (1.2 mm), post length: 6.5mm Closure: internally threaded heart back Read about piercing jewelry and closure systems .