Silver beads with Turquoise style stones 22 inch circa 1970s

This is a handcrafted necklace with mostly silver beads. The 11 large round beads look to be a silver tone. The others clean up like silver should uaing a polishing cloth. I'm not sure if the stone is turquoise or something close to turquoise, but they're polished with a green blue hue. This 22-inch necklace has a screw barrel clasp. Circa 1970s.