Vintage opalescent glass bulb shade.. for a ceiling light with just a bulb. You rest this on the bulb to make a diffusion of light.. see last picture to see demonstration of where to put when screwing in bulb. old fashioned chandelier. Such a simple elegant light dressing. buyer pays shipping. opening for bulb is 1.75 inch. Glass is approximately 6.25 inch wide. It sits about 3.5 inches tall. If ceiling light has pullstring do not use. I think from the 1910's-20's possibly older. For older homes with bare lightbulbs in the ceiling, such as closets and basements. Rare item..item is used and shows signs of use, including chips, and scatchs on edges possible natural discolorations. I accept no returns, and do not offer refunds as my items match description. You will recieve the actual item in photographs. bulb not included..