Square Halo White and Yellow Diamond Engagement Ring in 18kt White and Yellow Gold. (D.1/7 carat weight and Yellow Dia. 1/8 carat weight). This item is a SEMI-MOUNT and it comes with NO CENTER STONE but it will accommodate a 5.5mm cushion center stone.Metal Type: 18kt goldMetal Color: Two-toneStone Type: Diamond - WhiteCenter Stone Shape: CushionStyle: Halo style Weight: 3.9Accent Diamond-Shape: RoundAccent Diamond-Weight: 42742