Georges Braque Bird Procris Vintage Brooch Necklace 18k GoldA collectable jewelry art piece by Georges Braque from his world renowned The Birds Collection an 18 karat yellow gold and green enamel pin pendant called Procris. The Birds Collection is Braque's the only jewelry collection. It is called Bijoux De Braque and was created in collaboration with Baron Heger de Lowenfeld, a gem cutter and entrepreneur. It is a limited edition collection, and this Procris vintage pendant brooch is number 16 out of 75