Sterling Zuni Mickey Mouse Ring?

Trying to identify the maker of this sterling ring. It is signed on the back but I haven’t been able to find anything close. The ring is huge and the stone or whatever it is is cut and placed together. Any help would be greatly appreciated

That’s not turquoise or Native American. Manufactured by the looks of it.

There are some vintage Zuni & Navajo jewelry out there, illegal, I think?

Somebody here knows a lot more than me about it!
Maybe they’ll chime in.

Thank you all for the info!