This is an authentic ROBERTO COIN 18K Rose Gold Black Diamond Venetian Princess Medallion Pendant Necklace. The necklace is crafted of 18 karat rose gold and features elongated links and a round medallion pendant accented with diamonds, white diamonds are approximately .10 total carat weight and black diamonds are approximately .90 total carat weight. Follow this item for alerts. Roberto Coin is a registered trademark of Roberto Coin. FASHIONPHILE is not affiliated with Roberto Coin.