RING In white gold, set with three round old-cut diamonds weighing approximately 0.60 ct, 1 ct and 0.60 ct respectively, highlighted with small diamonds. A diamond and 18k gold ring set with three round old cut diamonds weighing approximately 0.60 ct, 1 ct and 0.60 ct. RC : TDD: 50-51; US: 5 1/2 (changeable). Gross weight: 7.4 g (18k - 750).