Navajo Shadowbox Turquoise Ring Sz 7.5 Royston 8g VTG 60s Oval Handmade Stamped
From a New Mexico estate. Box construction is a more advanced or difficult method for silversmiths. Probably from the mid-century to 1970s. Face of ring in inches at widest point: 1.5.
The silver is at least coin at 900 or sterling (tested).