Sterling silver round cufflinks and matching studs with black onyx gemstones and white diamond center. Crafted in 925 sterling silver Genuine black onyx gemstones White diamond center Cufflinks total diamond carat weight: 0.11 Studs diamond carat weight: 0.03 Packaged in black lacquered wood box and velour gifting travel pouch, perfect for gifting and display Style # CLSS1209