Rhinestone Brooch, Peridot Green Baguettes and Aurora Borealis Chatons Rhinestones. measures approximately 2 1/8 x 1 5/8 inches. Sparkly midcentury prong set iridescent rhinestone swirl brooch, pin. Unsigned, costume jewelry brooch ab glass stones in gold tone metal. In great vintage condition but could use a good cleaning. Photos taken in natural light.