Pair of vintage Navajo silver and turquoise rings.

Pair of vintage Navajo silver and turquoise rings. One is a large irregular shape single cabochon set on a tooth edge surrounded with scrolls, beads, rope and feather or leaf design. Nice old patina. 1 1/4" across the bezel. Size 8. Approximate weight is 9 g. The second is a single large polished oval cabochon with hues of mostly green and white set in a simple oval bezel. Four corners design. Appears to be signed but only "ichar" and "925" are legible. Nice old patina. 1 5/16" across the bezel. Size 6.5. Approximate weight is 13 g.