18kt White Gold Diamond Semi-Mount Ring with Milgrain Detail and an Oval 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 7x5mm oval cut center stone.Metal Type: 18kt goldMetal Color: WhiteStone Type: Diamond - WhiteCenter Stone Shape: OvalStyle: Halo style Weight: 5.05Accent Diamond-Shape: Round Full CutAccent Diamond-Weight: 0.48