Belle Époque Platinum, Ruby And Diamond Ring, J. E. Caldwell & Co. The pierced platinum mounting centering an oval ruby, flanked by 2 OEC diamonds, the flared shoulders set with 32 OEC diamonds. Signed J.E.C. & Co.
18 KARAT TWO-COLOR GOLD, RUBY AND DIAMOND RING, BUCCELLATI Of openwork design, centered by a cushion-cut ruby weighing approximately 1.95 carats, framed by numerous round diamonds weighing approximately 1.45 carats, size 5¼, signed Buccellati Italy.
A ruby and diamond ring Designed as a flowerhead, centring on an oval sugarloaf cabochon ruby, weighing 12.18 carats, within a brilliant-cut and pear-shaped diamond surround, to a similarly-cut diamond gallery and half-hoop, mounted in platinum, the diamonds estimated to weigh approximately 4.12 carats in total
Early 20th century ruby and diamond cluster ring, French c.1915, of shaped oval outline, the cushion cut ruby bordered by brilliant cut diamonds and with outer calibrй cut ruby highlights, millegrain set in platinum, rubbed serial number possibly 26690