750-thousandths white gold ring, set with an oval-cut rhodolite garnet weighing approximately 1.80 ct, flanked by ten faceted round-cut onyx stones, as well as eighty-two modern brilliant-cut diamonds. Markings (partial): S. Tour. Garnet dimensions: 10.3 x 7.5 x 5.5 mm Estimated total weight of diamonds: 0.50 ct Ring size: 55 Gross weight: 6.2 g