Moonstone, Ruby, and Diamond Ring

Description:

Moonstone, Ruby, and Diamond Ring, set with a cabochon moonstone measuring approx. 12.50 x 11.80 x 4.90 mm, with cabochon ruby and old mine-cut diamond crescent frame, cabochon ruby shoulders, and braided shank, silver and 18kt gold mount, size 6, French import stamps.
Estimate $300-500