New vintage genuine polished stones earrings

New vintage genuine polished stones earrings White opaque and clear crystalline polished stones. Not sure what kind of stones but I can see striations in some of them. I think they are all semiprecious. New vintage c. 1980s. Probably made in China. Brass or Gold tone metal sleeper hooks, hypoallergenic. 25 mm string of stones. 40 mm entire length. 5-12 mm long stones Boho, natural, rustic style.