Ceylon sapphire and diamond octagonal cluster ring, French, circa 1925.

Burmese sapphire and diamond cluster ring. Set to centre with a cushion shape old cut natural unenhanced Burmese sapphire in an open back rubover setting with an approximate weight o...

Ceylon sapphire and diamond cluster ring. Set to centre with a cushion shape mixed cut natural unenhanced Ceylon sapphire in an open back rubover setting with a weight of 4.40 carats, further set with ten round old cut diamonds in open back grain and rubover settings with an approximate combined weight of 0.32 carats, decorated with fifty-six round eight cut diamonds in open back grain and rubover settings with a combined weight of 0.56 carats. The total approximate diamond weight is 0.88 carats, to an impressive bombe cluster featuring intricate foliate openwork with millegrain edging, a linear pierced gallery and open backholing, leading to polished conforming shoulders and flowing through to a solid D-shape shank. Marked platinum, maker's mark 'A. Tillander' for A. Tillander, Finnish, circa 1920, accompanied by Edelsteinbefundbericht report #032743. A. Tillander was established by Alexander Tillander...

This Antique 1920s cluster ring centres around a stunning 3.00 carat oval cut sapphire. The sapphire, which has been heat-treated to enhance its rich blue hue, is securely claw set i...

This striking Art Deco cluster ring showcases a vibrant 1.35ct sapphire at its centre, flanked by two additional rich blue sapphires, each weighing 0.50 carat. Each stone is oval cut...