Huge vintage Art Deco paste flower brooch, with ice clear rhinestones and trombone clasp possibly French, large size

Fabulous large Art Deco 1930s machine age paste brooch with silver tone and clear rhinestone in a beautiful geometric flower shape. The trombone clasp is secure and works well - this style of clasp suggesting it may be a French brooch. It has a diameter of about 2.5 inches. The brooch is in good vintage condition, please examine photos carefully.