925 sterling silver Southwestern multicolor semiprecious gemstones inlay ring 6

Excellent vintage condition, shows minor wear. Massive upper oval setting features blue turquoise, green gaspeite, red and orange spiny oyster, and black onyx. There is a feather pictorial maker's mark which shows up on the unidentified section of more than one Native American jewelry database. Weight is 9.10 grams. Tags: rainbow multicolor colorful handmade signed designer stamped artisan