This is a Platinum Diamond Blue Sapphire .75ctw Pave Halo Split Shank Ring size 51 or 5.75. The ring is crafted of 900 platinum and features a centered sapphire accented with diamonds along the halo and band, weighing approximately .75 total carats with G-H color and VS clarity. Follow this item for alerts. Roberto Coin is a registered trademark of Roberto Coin. FASHIONPHILE is not affiliated with Roberto Coin.