RING In white gold, set with a brilliant-cut diamond weighing approximately 1.25 ct in a navette-shaped basket set with diamonds, pear-shaped and triangular sapphires. Hallmarked by the master. A diamond, sapphire and 18k gold ring set with a brilliant cut diamond weighing approximately 1.25 ct. RC: TDD: 58; US: 8 1/2 (changeable). Gross weight: 19.7 g (18k - 750).