Round Fancy Halo Diamond Ring in 18kt White Gold with Round and Princess Stones. (D 3/4 carat total weight) This item is a SEMI-MOUNT and it comes with NO CENTER STONE as shown but it will accommodate a 6.5mm round center stone.Metal Type: 18kt goldMetal Color: WhiteStone Type: Diamond - WhiteCenter Stone Shape: RoundStyle: Halo style Weight: 6.6Accent Diamond-Shape: Princess, RoundAccent Diamond-Weight: 0.73