Lot 258 , An onyx and diamond ring, early 20th century

An onyx and diamond ring, early 20th century, centring on a cushion-shaped diamond weighing approximately 0.25 carats, within a mount of square outline, set with a section of polished onyx within an outer border of circular-cut diamonds totalling approximately 0.45 carats, mounted in gold and platinum, size M1/2, gross weight approximately 4.5 grams
£200-300

Condition:
Some discolouration to settings, possibly where diamonds have been re-set slightly off-centre setting, possibly a replacement shank.

Sold for £550