This is an authentic ROBERTO COIN 18K Yellow Gold Diamond .24ct Diamonds By The Inch Necklace. The necklace is crafted of 18 karat yellow gold and features a bezel set round brilliant cut diamond, weighing approximately .24 total carat weight with H color and SI2 clarity. Follow this item for alerts. Roberto Coin is a registered trademark of Roberto Coin. FASHIONPHILE is not affiliated with Roberto Coin.