Sapphire and Diamond Ring Set in 18kt White Gold. (D.1/8 carat weight, Sapp 1/2 carat 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. Peg HeadMetal Type: 18kt goldMetal Color: WhiteStone Type: Diamond - WhiteCenter Stone Shape: PrincessStyle: Classic Weight: 4.06Accent Diamond-Shape: Round Full CutAccent Diamond-Weight: 0.12