Probably Zuni. Natural mined turquoise in a great silver medallion shape. 1930s-40s.
Paiute Bone Bead Necklace A2666
Native American Brutalist Squash Blossom J448
Navajo Jewelry Suite of Silver & Turquoise Necklace, Cuff and Ring J447
Navajo Turquoise & Silver 3-Stone Cuff circa 1960s J446