A white gold and diamond solitaire ring, 20th century

Centred with an emerald-cut diamond set in four prong setting. Diamond measuring approx. 7.74 x 5.71 x 4.08 mm Estimated diamond weight 1.60 ct, colour ca. J-K, clarity ca. VS2-SI2 Gross weight approx. 8.5 g Ring size 49/15.5 Graded and measured in m