This is an authentic ROBERTO COIN 18K White Gold Blue Sapphire Chic and Shine Oval Link Necklace. The necklace is crafted of 18 karat white gold and features flat oval links of varying sizes and a toggle closure accented with blue sapphires on the tips of the bar as well as the brand's signature synthetic ruby. Follow this item for alerts. Roberto Coin is a registered trademark of Roberto Coin. FASHIONPHILE is not affiliated with Roberto Coin.