Vintage Blue Rhinestone Floral Pin 1950’s ?

Vintage pin. Silver-tone metal - setting. Prong set rhinestones. All rhinestones but three are foil backed rhinestones. The pin has some tarnish roughness right in the middle. Clasp mechanism works. Half of the largest Smokey blue rhinestone has some fading of the foil backing. The light blue rhinestones are open backed. Approx size 2 1/2” x 1” This is an older Item has been used and may have wear due to age, use and storage. Flaws mentioned above.