Oil lamps,Victorian glass,This period Victorian blown glass oil lamp shade measures 8 and 1/4 inches across its top and 5 inches across its bottom. and 5 inches high. "Victorian glass shades" like this one are rare and hard to find. This glass shade dates from 1860 to 1880. The top of this shade is etched for one and one half inches and has a wonderful scallop to it.