Vintage Philippe Ferrandis Rhinestone Adjustable Ring

1990s goldtone almost brass looking ring with prong set big emerald cut white center rhinestone with two round faux-pink peridots on top and bottom with two rectangular silverish cabochons on either side of the main stone adjustable ring. Marked "Philippe Ferrandis Paris." Measures: 1 1/2 inches long by 1 1/2 inches wide by 1 1/4 inches deep. Condition: There is some discoloration to the metal noticeable from the back though I suspect that this is close to the original coloring. There is also a bit of crazing to the foiling of one stone which is barely noticeable and only upon close inspection.