Cathedral Diamond Ring with Square Halo and Filigree 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 5.5-6mm princess cut center stone.Metal Type: 18kt goldMetal Color: WhiteStone Type: Diamond - WhiteCenter Stone Shape: PrincessStyle: Halo style Weight: 5.52Accent Diamond-Shape: Round Full CutAccent Diamond-Weight: 0.59