St. Petersburg, circa 1890
A 14K gold ring is centered with a cabochon cut bluish-green chrysoprase (a valuable variety of chalcedony gemstones) flanked by two old mine cut diamonds.
The chrysoprase measures 17 x 8 x 6.3 mm and is approximately 6.13 ct.
Estimated total diamond weight 0.30 ct.
The ring is marked with 56 zolotnik Imperial gold standard and maker’s initials.
Ring size 8.5 (18 mm) sizable
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