Micro-Set 18kt White Gold Diamond Ring with Cushion Style Halo. (D 1/2 carat total weight) This item is a SEMI-MOUNT and it comes with NO CENTER STONE as shown but it will accommodate a 5mm cushion cut center stone.Metal Type: 18kt goldMetal Color: WhiteStone Type: Diamond - WhiteCenter Stone Shape: CushionStyle: Halo style Weight: 4.7Accent Diamond-Shape: RoundAccent Diamond-Weight: 42737