Green Blue Rhinestone Brooch Cabochon Domed Layered Vintage Costume Jewelry

Green Blue Rhinestone Brooch Cabochon Domed Layered Vintage Costume Jewelry I have been hanging onto this brooch for a couple of years trying to determine the maker of it. The back reminds me of some of the Schreiner pieces but I doubt that it is. I do know that it's quality (even with a few darker rhinestones) and surely can be attributed to a well known designer! The emerald green cabochons are glass and they are surrounded by baby blue and green rhinestones. All are prong set in a silver tone setting that appears to be rhodium plated or similar. It measures 2 1/4" wide x 2 1/8" and, aside from a handful darkening rhinestones, is in excellent condition (looks better in person.) It is definitely worth replacing the darkened ones! Very quality piece of jewelry!