This is an authentic ROBERTO COIN 18K Yellow White Gold Diamonds by the Inch Dog Bone Chain Dangle Necklace. The necklace is crafted of 18 karat yellow and white gold and features a dog bone chain with seven dangling diamond stations bezel set in white gold weighing approximately .26 total carat weight. Follow this item for alerts. Roberto Coin is a registered trademark of Roberto Coin. FASHIONPHILE is not affiliated with Roberto Coin.