, the rectangular step cut emerald in a pierced double border of old single cut diamonds, the outer border meeting and extending as two tapering lines down the shoulders, millegrain set, mounted in platinum, signed 'MARCUS', the emerald approximately 1.15ct, the diamonds approximately 0.50cts in all Length of cluster 12mm
Emerald approximately 7.0 x 5.5 x 3.8mm Weight: 4.5g
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 19th century cabochon emerald and diamond three stone ring, c.1890, inset to a broad gold band, the central pyramidal cabochon cut Colombian emerald of square cushion outline, of approximately 3.50 - 4.00ct,