RING In yellow gold, set with an old-cut cushion yellow diamond weighing approximately 1.40 ct, crowned with an old-cut pear-shaped diamond in white gold. The shoulder is set with falling small diamonds. Circa 1900. A diamond and 18k gold ring set with an old cut cushion shaped yellow diamond weighing approximately 1.40 ct. Circa 1900. RC : One pear-shaped diamond missing. TDD: 52; US: 6 (subject to change). Gross weight: 4.3 g (18k - 750).