Russian, made between 1908 and 1917
A 14K gold ring is covered with a glossy black enamel and set with a sparkling antique cushion cut diamond (5.5 x 5 x 3.4 mm, L-M color, SI1 clarity, approximately 0.80 ct).
The ring is marked with 56 zolotnik gold standard and maker’s initials.
Ring size 10.5 (20.5 mm)