Square Halo Diamond Ring with Milgrain Detail 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 5.5 princess cut center stone.Metal Type: 18kt goldMetal Color: WhiteStone Type: Diamond - WhiteCenter Stone Shape: PrincessStyle: Halo style Weight: 5.33Accent Diamond-Shape: Round Full CutAccent Diamond-Weight: 0.66