Beautiful antique gf filigree antique broach - amethyst and emerald (?)

This gorgeous antique broach is gold filled (based on the wear pattern). Sturdy clasp, straight pin as per pictures. About 2” long. Has a gorgeous purple stone, amethyst, and a radiant green cabichon (which I think could be an emerald but I can’t test for that. Other listings on the internet imply it’s emerald. I can’t promise that 🙂 The pin has detailed lines and streamlined design appropriate for the Art Deco age or style.(1919-1939 ish) Delicate gold filigree with prong set stones.