Vintage circa 1920s early lighting shade. This bowl shaped white translucent glass often called clam broth , is in the iconic Sheffield style . Once used for Industrial or public spaces, These simple yet elegant Lighting shades are making their way into homes. This particular shade measures :

2 1/4 inch Lip Fitter

7 inch diameter Bottom

4 7/8 inches deep when measured thru center

Excellent Pendant Lamp , ceiling fixture, or even used as a diffusing shade on a torchiere styled floor lamp