1920s-1930s Screw-Back Earrings, Carved Shell Cameo, Prong Set, Lace-Like Design

1920s-30s screw-back earrings featuring a carved shell cameo, prong-set in a 10k gold-plated lace-like design. Designer: Unknown Materials: 10k gold-plating over base metal, carved shell cameo Style/Era: Edwardian Revival / Early Art Deco, 1920s–1930s Condition: Good vintage condition; minor wear on metal consistent with age Dimensions: Only Cameo w/ metal "frame": 0.75" x 0.5" Including entire front: 1.25" x 0.5" Features: Screw-back design, prong-set cameo, lace-like openwork metal pattern, carved shell cameo, translucent in backlighting. Cameo seems to depict a smiling face, more noticeable with backlighting.