Sapphire and diamond coronet cluster ring. Set to centre with an oval old cut natural no heat sapphire in an open back claw setting with an approximate weight of 0.77 carats, further set with ten cushion old mine diamonds in open back claw setting with a combined weight of 0.80 carats, further flanked by two cushion old mine diamonds in open back grain settings with a combined weight of 0.14 carats. The total approximate diamond weight is 0.94 carats, to an elegant coronet cluster design featuring curving claws, an intricately pierced gallery and fancy open backholing, leading to ridged shoulders and flowing through to a tapering solid D-shape shank. Tested rose gold and platinum, circa 1910.