"Screaming Faces"...Very Heavy Glass..but what is it ?

I have tried to take more pix...butits not letting me !! This very solid piece of glass has 8 screaming faces..its hollow (you can a whole at the base)...but the glass is very thick
It balances precariously-but doesn't really stand up..also cant see any joins but would have a "Hell" of a job to blow
32cms from one tip to the other..and 18 cms high when its on its side

Any ideas ??

Does it have more than one face in the piece? Reminds me of Munch's The Scream painting.

There are 8 faces...and I thought of the Munch...ive googled Munch Glass but to no avail

"Bump"

The roughly-finished base suggests it might have once been a part of something that covered/supported it.

A light fitting, perhaps?

Not sure who would have it as a light fitting, though - perhaps a theme park, theme pub, film/theatre prop, etc...