eManco Handmade Deluxe Open Cuff Ring Adjustable Simple Crystal Copper Ring base for Women Perimeter: 55mm | Net weight: 6g Material: Crystal | Copper | Zinc alloy Made with good cut Crystal,copper ring base and eco-friendly alloy metal ring with a simple and elegant design Products undergo strict quality control. Promise 30-day Products Exchange and Money Back Guarantee. Package: Gift box packaging(free of charge)