Product Details: Materials : Copper, Glass Weight : 13g Color: Silver Cufflink Size : Base(18mm),Gem(6mm) Occasion: Perfect design is applicable to the office,meetings,weddings,anniversaries and more. Please Note: 1.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Please consider this before the purchase. 2.Please allow slight deviation for the measurement data. 3.If you are satisfied with our products, please recommend to your friends and family.Thank you very much! 4.If there is any problems about our product, please write to me. We will help you!