Prismatic Globe Size Guide:
Large Globe = approximately basketball size
Medium Globe = approximately football size
Small Globe = large grapefruit size
Prismatic glass shades are made from cast glass characterised by small ridges on the outside surface. It is these ridges that allow the light to be evenly distributed around the fitting and obscure the light bulb. With a history as long as electric light, prismatic light fittings have a timeless appeal.
Prismatic glass is cast glass, bubbles & small irregularities are features of cast glass and not considered faults.