This is an authentic ROBERTO COIN 18K Yellow Gold Blue Sapphire Chic and Shine Oval Link Necklace. The necklace is crafted of 18 karat yellow gold and features flat oval links with a toggle closure accented with blue sapphires and a synthetic ruby. Follow this item for alerts. Roberto Coin is a registered trademark of Roberto Coin. FASHIONPHILE is not affiliated with Roberto Coin.