Gilo and Grace Nakai, Navajos, have a special process to keep the sterling bright. They also make mixed stone jewelry which I find appealing. This ring has 4 turquoise stones, including a heart and garnet, onyx and agate. The width along the finger is 1 1/4" and 1 1/8" across. Size 6 1/4". Marked Nakai. Excellent vintage condition. The Nakais have been making jewelry since the 1970s and have a shop in Santa Fe and elsewhere.