Round 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 6.5mm round center stone.Metal Type: 18kt goldMetal Color: WhiteStone Type: Diamond - WhiteCenter Stone Shape: RoundStyle: Halo style Weight: 4.56Accent Diamond-Shape: roundAccent Diamond-Weight: 42863