Early Navajo Carlin Mine Turquoise Ring in Sterling Silver Size: 7 3/4

Vintage Navajo sterling silver ring set with Carlin Mine turquoise. Stone is a nice sky blue with chert black matrix. Size: 7 3/4. It is totally hand made with an ingot formed shank that has cold chisel splits. Back side has solder drops. It is quite rustic. Face is almost 1" wide. Weight" 6.8 grams. No hallmarks. Acid tested sterling silver or higher. I suspect it is higher than 925.