Halo Diamond and Sapphire Ring in 18kt White Gold. (D 1/2 carat weight and Sapp.1/7 carat 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: 5.3Accent Diamond-Shape: RoundAccent Diamond-Weight: 42737