You are viewing a fine quality large man's Sterling silver and Morenci Turquoise ring made in the 1970's. I believe it is either Navajo or Zuni. It is marked with the maker's initials; J W. The ring measures 30 mm or just under 1 1/4" wide by 25 mm or 1" across the finger. It is a size 12 1/2 with a thick shank and can be re-sized. The ring weighs 26.3 grams.