A RUBY, SAPPHIRE AND DIAMOND DRESS RING Of crossover design, set with an oval-shaped sapphire and ruby, to tapered baguette-cut diamond shoulders, mounted in 18K gold, diamonds approximately 0.64ct total, with maker's mark 'JK', French import mark, ring size N½ Accompanied by a report from C. Dunaigre in Switzerland, stating that the ruby weighing approximately 1.78ct and the sapphire weighing approximately 2.83cts are natural, of Burmese origin, with no indications of heating. Report number CDC2209603 / 1&2, dated September 30th 2022.