Round Halo Split-Shank Diamond Ring in 18kt White 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 6.5-7.5mm round center stone.Metal Type: 18kt goldMetal Color: WhiteStone Type: Diamond - WhiteCenter Stone Shape: RoundStyle: Halo style Weight: 7.41Accent Diamond-Shape: Round Full CutAccent Diamond-Weight: 0.58