, the octagonal step cut emerald in a cushion border of small old round brilliant cut diamonds meeting and extending as two lines down the shoulders, pierced detail and decoration, millegrain set, mounted in platinum, signed 'MARCUS', the emerald approximately 1.25ct, the diamonds approximately 0.40cts in allCluster length 11mm
Emerald approximately 6.8 x 6.5 x 4.2mmWeight: 5g
Early 20th century three stone emerald and diamond ring, c.1910, set with a 3.97ct Colombian emerald of stepped square cut, flanked by two Asscher cut diamonds of approximately 2.25ct and 1.80ct,
Late 18th / early 19th century pear shaped emerald and diamond cluster ring, c.1800, the Colombian emerald of step cut and elongated outline, open set and inverted within a heart shaped border of old cut diamonds,
Art Deco emerald and diamond cluster ring, c.1925, of scalloped edged oblong outline, centred by a cut-corner rectangular emerald, 1.13ct, bordered by twelve small round brilliant cut diamonds, emerald line shoulders extending from the central emerald, collet set with trace of millegrain work