Royal Blue Burmese sapphire and diamond three stone ring. Centrally set with a cushion shape old cut natural unenhanced Royal Blue Burmese sapphire in an open back claw setting with an approximate weight of 2.63 carats, flanked by two round old cut diamonds in open back claw settings with an approximate combined weight of 0.90 carats, to an ornate three stone design featuring split claws, an intricately pierced gallery and circular open backholing, flanked by tapered split shoulders featuring cheniers which flow down to a solid D-shape shank. Marked 18 carat yellow gold and platinum, English, circa 1920, accompanied by Gem Research Swisslab (GRS) report #2017-047012.
