I have no idea what this is and having no-one comment before me I cant be swayed by what they think. I did the right click thing and didn't get a "search image with google lens" so I'm assuming its not true
And tasty abstract. Or as I originally said, a terrific abstract. it looks like an inverted glass bottle top or the base of a bottle or vase. I havenโt even tried your other suggestion
is this is a lamp shade?