Cushion Shaped Halo Diamond and Sapphire Ring in 18kt White Gold. (D 1/2 carat weight and S. 1/8 carat weight) This item is a SEMI-MOUNT and it comes with NO CENTER STONE as shown but it will accommodate a 5.5mm cushion center stone.Metal Type: 18kt goldMetal Color: WhiteStone Type: Diamond - WhiteCenter Stone Shape: CushionStyle: Halo style Weight: 5.68Accent Diamond-Shape: roundAccent Diamond-Weight: 42737