This is an authentic ROBERTO COIN 18K White Gold Diamond .25ctw Diamonds By The Inch Five Station Necklace. The necklace is crafted of 18 karat white gold and features five bezel-set round brilliant cut diamond stations weighing approximately .25 total carat weight. The necklace also features a synthetic ruby stone set near the lobster clasp. Follow this item for alerts. Roberto Coin is a registered trademark of Roberto Coin. FASHIONPHILE is not affiliated with Roberto Coin.