.925 Sterling Silver Double-faced Disco Round Ball Clear Crystal CZ Dangle Drop Stud Earring Pair METAL: .925 sterling silver (Hypoallergenic) STYLE: 6mm/8mm Designer Double-faced Disco Round Ball Clear Crystal CZ Dangle Drop Stud Earring Pair FRONT STUD: 6mm BOTTOM STUD: 8mm A must have for your earring collection!