Gorgeous beast! Probably quite an early piece of American Studio glass, (given you are in the states!).
The decor is achieved with silver chloride - much used in early studio glass.
It might be very hard to track down the artist. Many only worked in glass for a short while, then moved on to something else.
I have a glorious piece of work by Jim Megura, whose signature was id'd by oldglassman for me here - Jim is a personal friend of his and now sells and writes about ancient glasses and bottles - I've even met him at fairs over here and was able to thank him for it personally.

I'm mentioning this, in the hope that Peter (oldglassman) might see it and show it to Jim, who
might be able to help!