These earrings are big - 1" x 1 3/8" and glamorous, and certainly very colorful! Each has 9 large prong-set foil backed stones. Unfortunately, it appears they have been a victim of a bad repair. The screw-back fasteners have been re-attached with what looks like hot glue.
Please see the close-up photos of both the front and back. A small bit of glue shows through on one earring and both show excess glue on the reverse. The crew-back fasteners are quite secure and I have not attempted to remove them.
I have run the earrings through a sonic cleaner several times to rid them of any debris or loose parts. I believe the earrings are signed under the glue - the rich colors and variety of shapes suggest several well known vintage jewelry makers.