This is an authentic ROBERTO COIN 18K White Gold Diamond 2.25ctw Diamonds By The Inch Continuous Station Necklace. The necklace is crafted of 18 karat white gold and features bezel-set round brilliant cut diamond stations, approximately 2.25 total carat weight. Follow this item for alerts. Roberto Coin is a registered trademark of Roberto Coin. FASHIONPHILE is not affiliated with Roberto Coin.