Silver beads with Turquoise color glass like 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 when 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 and are glass like.. This 22-inch necklace has a screw barrel clasp. Circa 1970s.