Small white glass sphere, is often used on floor lamps and / or hanging lamps. Diameter of the glass globe is 11.8 cm / 4.6 inch with an opening of 4.0 cm / 1.6 inch. Normally attached to the lamp with a retainer spring.
Here you will find the E14 retainer spring
Here you will find a 15.0 cm / 5.9 inch sphere of white glass