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Antique ruby and diamond coronet cluster ring. Set with an oval old cut natural unenhanced ruby to centre in an open back claw setting with an approximate weight of 0.70 carats, encircled by a row of cushion shape old mine diamonds and further set to the shoulders, thirty four in total of varying sizes, all in silver grain and cutdown settings, with an approximate combined weight of 1.00 carats, with a finely pierced gallery and intricate backholing, the trumpeting openwork shoulders lead around to a solid D-shape shank. Tested yellow gold and silver, French assay marks, circa 1850.