Vintagesapphire and diamond ring. An oval old cutnatural unenhanced Ceylon sapphire is set to centre in an open backrubover setting with an approximate weight of 1.80 carats, encircled by a cluster of fifty six round brilliant cutdiamonds in open back grain settings of varying sizes with an approximate combined weight of 2.50 carats, all set to a heavy conforming shank with the cluster terminating at the shoulders, with fancy shape backholing and leading elegantly down to a solid heavy D-shape shank. Marked 18 carat yellow gold, English, circa 1970, accompanied by Gemmological Certification Services report #78170-02.