Halo Diamond and Ruby Ring in 18kt White Gold with Milgrain and Engraved Design. (D 1/4 carat weight and R 1/8 gem 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: Vintage Weight: 4.68Accent Diamond-Shape: RoundAccent Diamond-Weight: 42739