Vintage 925 sterling silver Southwestern ring with natural green turquoise

Vintage sterling silver Native American Western/ Southwestern ring. Delicate and feminine looking. Handmade, most likely by Navajo. Unique and collectible. With green turquoise stone. Size 4.5. In excellent vintage condition. The stone is natural and has an uneven surface, as shown under x20 magnification. Not stamped, but professionally tested as 925 sterling silver.