Cushion Style Halo Diamond Ring in 18kt White and Rose Gold (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 5.5mm cushion center stone.Metal Type: 18kt goldMetal Color: Two-toneStone Type: Diamond - WhiteCenter Stone Shape: CushionStyle: Halo style Weight: 5Accent Diamond-Shape: RoundAccent Diamond-Weight: 0.46