This is a vintage Aurora Borealis crystal choker, clip-on earrings, and bracelet set.
The double-strand choker necklace measures about 16.5" long and has a hook clasp. The elastic band bracelet measures approximately 7.5" around, and the screw-back floral clip-on earrings measure 7/8" in diameter.
These pieces are in good pre-owned condition in a brown velvet box, but possibly not the correct one.