Single screw-back earring made of silver-tone metal, set with two clear faceted stones in claw mountings. The stones are most likely glass or crystal rhinestones, consistent with mid-20th-century costume jewelry.
The screw-back mechanism indicates it was intended for non-pierced ears, a common design between the 1940s and 1960s. The remaining earring suggests that the original pair has been separated or one piece lost.