This Elegant 3-Stone Halo of Sparkling Round Diamonds set in High Polished 18k White Gold. (D 1/2 carat total weight) This ring 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: 4Accent Diamond-Shape: ROUNDAccent Diamond-Weight: 42737