Colour change Ceylon sapphire and diamond ring. Set to centre with an oval old cut natural unenhanced pinkish purple colour change Ceylon sapphire, pinkish purple in daylight and pink in incandescent light, in an open back rubover setting with a weight of 7.38 carats, encircled by thirty round eight-cut diamonds in open back grain and claw settings with a combined approximate weight of 1.00 carats, to an impressive elongated coronet cluster design featuring stylised claws and polished borders, an intricately pierced gallery and fancy shape open backholing, leading to inwardly tapering shoulders and flowing through to a solid D-shape shank. Marked 18 carat yellow gold and tested rose gold, circa 1905, accompanied by The Gem & Pearl Lab report #22215.
