Diamond Rings 2.52 Carat Cushion Cut diamond, Platinum setting and 1.28 cts. of rounds. 2.52 Carat Cushion Cut diamond, Platinum setting and 1.28 cts. of rounds. 3.08 Carat Radiant Cut diamond, 18K white gold setting, 2 matching Trapezoid diamonds = 0.42 cts. and 0.62 cts. of rounds. 3.08 Carat Radiant Cut diamond, 18K white gold setting, 2 matching Trapezoid diamonds = 0.42 cts. and 0.62 cts. of rounds. 1.72 Carat Round Brilliant Cut diamond, Platinum setting, 2 matching Kite shaped diamonds = 0.18 cts. and 0.25 cts. of rounds. 2.52 Carat Cushion Cut diamond, Platinum setting and 1.28 cts. of rounds. 1.50 Carat Oval shaped diamond, Platinum setting, 2 matching Trapezoid diamonds = 0.57 cts. and 0.54 cts. of rounds.