The diameter of large lamp is 6 inches. The diameter of middle lamp is 4.8 inches. The diameter of small ball lamp is 4 inches (mini size).This unique glowing orb ball light is designed as a modern art decor. It's made by frosted mercury craft. You will enjoy beautiful starburst when it's turned on. Romantic galaxy starlight flashed from this fairy ball lamp on table.This wireless led light is powered by battery. So you can put it on anywhere indoor, bedroom, living room, kitchen, hallway, dining table, coffee table, apartment. It's perfect for home decoration and night desk night on table.