I would be careful that if you try to use it to put only a very small and low wattage bulb in it as I do not see any way for the heat to be dissipated. If you put a 60 watt bulb or higher in it you would stand a good chance of having it crack or shatter from the built up heat. I am sure it was meant to be used as a dim fairy light to be a decorative accent rather than an actual source of useable light.
Christine is right, as usual in identifying this as Imperial Glass made in their Soda Gold pattern. Unofficial names for this pattern that you will see somethings are tree of life or spiderweb, but the actual name is soda gold. It is a kind of Depression Glass that is unlike other Depression Glass patterns.
I like it very much myself and you were lucky to find it and buy it.