Octagon Shaped Halo Diamond RIng in 18kt White Gold. (D.1/8 carat total weight) This item is a SEMI-MOUNT and it comes with NO CENTER STONE as shown but it will accommodate a 7.4mm round center stone.Metal Type: 18kt goldMetal Color: WhiteStone Type: Diamond - WhiteCenter Stone Shape: RoundStyle: Vintage Weight: 4.29Accent Diamond-Shape: RoundAccent Diamond-Weight: 42743