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Vintage Ceylon sapphire and diamond ring. Set centrally with one cushion shape double brilliant cut natural unenhanced Ceylon sapphire in an open back claw setting with an approximate weight of 4.11 carats, flanked by two rectangular baguette cut diamonds in open back rubover settings with a combined weight of 0.40 carats, further set with six round eight cut diamonds in open back grain settings with a combined weight of 0.12 carats. The total approximate diamond weight is 0.52 carats, to a three stone design with structured openwork gallery and shaped backholing, flowing through to diamond set trumpeting shoulders leading to a tapering shank. Marked platinum, circa 1960, accompanied by Gemmological Certification Services report #78150-21.