Native American Band Ring with Turquoise Inlay Triangles Size 11

Nice early Navajo sterling silver band ring with inlay triangles. Turquoise is rich in color and has nice butterscotch matrix. Size 11 and measures 1/4" wide. Heavy and well made. Feels smooth on your finger. Weight: 6.4 grams. Some tarnish. No hallmarks. Acid tested. C. 1950.