Cathedral Square Halo Diamond Ring with 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 6.5-7mm cushion cut center stone.Metal Type: 18kt goldMetal Color: WhiteStone Type: Diamond - WhiteCenter Stone Shape: CushionStyle: Halo style Weight: 4.77Accent Diamond-Shape: Round Full CutAccent Diamond-Weight: 0.6