Smithsonian Institution Hummingbird Pin Set

2 pins from the Smithsonian Institution and Avon inspired by the work of John Gould. The larger Hummingbird has Rose Zircon crystals with gold beak and wings. The smaller Hummingbird is gold tone with a crystal eye. All stones are firmly in place. One pin back works well on both pins. The other one seems loose fitting. Otherwise Excellent condition.