Vintage Shell Cameo Screw-Back Earrings with Rhinestone Accents

A pair of vintage oval-shaped cameo earrings, likely dating from the mid-20th century (circa 1940s-1950s). Each earring features a hand-carved shell cameo depicting the profile of a woman with upswept classic hair, set within a gold-toned metal frame. The shell shows characteristic layered coloring with a creamy white figure against a peach or light tan background. The frame is a decorative beaded or 'millgrain' style bezel, further embellished at the base with a small cluster of colorless rhinestones arranged in a floral or spray pattern. The construction utilizes a screw-back mechanism, which was common before the widespread popularity of pierced earrings. The metal appears to be gold-plated or gold-filled base metal, showing a light age-related patina and minor tarnishing in the recessed areas of the beaded work. One earring shows slight discoloration on the shell surface, possibly from skin oils or dust. The carving detail is of moderate quality, showing clear facial features and hair texture. There are no visible maker's marks in the provided image, but the overall style is consistent with American costume jewelry of the mid-century era. The hinges and screws appear intact and functional.