Turquoise ring in my moms jewelry box 40 years....any clue?

Curious to find out if this is a real Indian ring? My mother has had it for over 40 years. Was supposed to be Indian mAde and from Arizona but we have no idea. It was a gift from her aunt years ago. Any ideas/input would be greatly appreciated! There is a “H” engraved in the back. Thanks!

Hello,

This is a Navajo turquoise ring. It definitely has that wonderful aged look. Not sure who the etched H belonged to. Thank you for sharing.