18ct (750°/oo) yellow gold and (950°/oo) platinum ring, a square motif set with a central old-mine cut diamond weighing approximately 0.58ct and shoulder set with a graduated line of calibre-cut rubies and a half-circle motif paved with old-mine cut diamonds.
French work, circa 1920-1930.
Ring size : 53 - M-1/2 (UK); 6-1/4 (US)

Gross weight : 8.5g (0.3oz).
Central diamond dimensions : approx. 5.4 x 5.6 x 3.1 mm.
Total diamond weight : approx. 0.87ct.