This is an authentic ROBERTO COIN 18K White Gold Diamond .24ct Diamonds by the Inch Pendant Necklace. The necklace is crafted of 18 karat white gold and features a single bezel-set diamond approximately .24 carat with H color and VS1 clarity, with a synthetic ruby on the back side. Follow this item for alerts. Roberto Coin is a registered trademark of Roberto Coin. FASHIONPHILE is not affiliated with Roberto Coin.