Drop earrings vintage 1980s

1980s vintage drop earrings in black and aurora borealis/pearlized multicolor design. They're silver plated but the stamp on the backs is slightly worn due to being vintage. Zoom photos to see some wear to edges on back. these were cleaned before photos and packaged after. Drop is approx. 2". Diameter is just under 1.5". They're lightweight- about 1 ounce weighed together. Stem back.