Cushion Shaped Halo Diamond Ring in 18kt White Gold. (D 5/8 carat total 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: 5.3Accent Diamond-Shape: roundAccent Diamond-Weight: 42863