"Retro Tank Ring In 4 Carat Diamond And Emerald Gold"
Very nice vintage ring, made in France around 1940. The ring is quite large. The central emerald weighs approximately 4 carats. The color is intense and the stone is very clean. Probably from Colombia. Surrounded by 10 diamonds for a total estimate of 1 carat. Crafted in 18k yellow gold. There is a hallmark for gold: the owl, and a hallmark for platinum the old man. Finger size 55 France or 7 USA. Possibility of crumb to size. 
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