gold three stone ring with emerald and diamond

An 18 carat gold and platinum three-stone ring set with a high cabochon cut emerald (app. 2 carat with moderate fissure filling) with on each side an old-cut diamond (app. 0.65 carat in total), France, circa 1900.

weight: 3.68 grams
ring size: 17.25 mm / 7 US
width: 8.8 – 1.7 mm