18kt White Gold Diamond Ring with Milgrain Detail and a Marquise Style Halo. (D1/4 carat total weight) This item is a SEMI-MOUNT and it comes with NO CENTER STONE as shown but it will accommodate a 10x5mm marquise cut center stone.Metal Type: 18kt goldMetal Color: WhiteStone Type: Diamond - WhiteCenter Stone Shape: MarquiseStyle: Halo style Weight: 3.54Accent Diamond-Shape: Round Full CutAccent Diamond-Weight: 0.26