Yellow Ceylon sapphire and diamond coronet cluster ring. Set to centre with a cushion shape old cut natural unenhanced yellow Ceylon sapphire in an open back rubover setting with an approximate weight of 4.80 carats, encircled by a single row of sixteen round old cut diamonds in open back rubover settings with a combined approximate weight 0.60 carats, to an impressive coronet cluster design with scalloped edging, intricately pierced open gallery and fancy open backholing, flanked on either side with raised open shoulders supported by scrolling details which lead down to a solid D-shape shank. Marked platinum, English, circa 1960.
