Lovely older signed Native American ring, tested sterling silver with 2 turquoise stones, colors are different, maybe on purpose or if not stabilized the color change could be from age. Ring is size 8 and top measures 1 & 3/8" long. Signature appears to be a joined JT, other sources have shown this mark to be of Navajo artist Johnson Todacheeny but that is not definitive. The quality and age are . I collect Native American jewelry, especially rings, and when I wear them, I wear four on each hand, meaning 8 rings in all sizes too. And finally my collection has grown too big to keep all of them. A lot of our listings are from my personal collection, all hand selected with care.