Silver-tone Round Abalone Shell Dangle Screw Back Earrings

For consideration is this pair of vintage silver-tone and round abalone shell dangle screw back earrings. The abalone shell discs are flat and colorful with blues and greens and creams and measure 7/8 inch in diameter. There is no makers mark and they are in excellent vintage condition with no problems noted. Buyer will receive FREE shipping. Thank you for looking!