Cartier sapphire and diamond necklace. Set with one hundred and nineteen round natural unenhanced Burmese sapphire beads, with a combined approximate weight of 203.00 carats, to an elegantly graduating single row, the clasp set to centre with a round old cut diamond in an open back rubover setting with a weight of 1.30 carats, flanked by two shield shape old cut diamonds in open back rubover and grain settings with a combined weight of 0.15 carats, enriched by twenty six round single cut diamonds in open back grain settings with a combined weight of 0.26 carats. The total approximate diamond weight is 1.71 carats, to a marquise shaped secure push clasp featuring elegant openwork, subtle millegrain decoration, finely pierced open backholing and safety catch, approximately 24" in length. Marked platinum, signed 'CARTIER NY', American, circa 1925, accompanied by C. Dunaigre Switzerland report #CDC1403182.