Square Style Halo Diamond Ring in 18kt Yellow Gold. (D1/3 carat total weight) This item is a SEMI-MOUNT and it comes with NO CENTER STONE as shown but it will accommodate a 5.5mm princess cut center stone.Metal Type: 18kt goldMetal Color: YellowStone Type: Diamond - WhiteCenter Stone Shape: PrincessStyle: Halo style Weight: 3.5Accent Diamond-Shape: roundAccent Diamond-Weight: 42738