Cushion Shaped Halo Diamond Ring in 18kt White Gold. (D 3/8 carat total weight) This ring is a SEMI-MOUNT and it comes with NO CENTER STONE but it will accommodate a 6.5mm round center stone.Metal Type: 18kt goldMetal Color: WhiteStone Type: Diamond - WhiteCenter Stone Shape: RoundStyle: Halo style Weight: 3.66Accent Diamond-Shape: RoundAccent Diamond-Weight: 0.37