Early 20th century diamond three stone and onyx navette cluster ring, c.1915, with three old European cut diamonds, the principal to centre of approximately 1.80ct,
forming a boat shaped cluster with calibre cut onyx ground, the shank of bevelled edge section, mounted in platinum, the side diamonds approximately 0.70cts in all Width of cluster mount 8.5mm
Width 1.7 cm
Central diamond approximately 8.10 x 8.10 x 4.15 Weight: 3.5g
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,
Early 20th century diamond three stone and onyx navette cluster ring, c.1915, with three old European cut diamonds, the principal to centre of approximately 1.80ct,