Vintage Coro Cameo Brooch 40s-50s Diamond Accent 10K Gold Plated Shell Carving

Vintage Coro cameo brooch with a real diamond accent. Carved shell cameo set in a 10K gold-plated metal frame. Features a small genuine diamond at the neck of the cameo. Designer: Coro Materials: Shell cameo, 10K gold plating over base metal (brass?), genuine diamond accent (tested) Style/Era: Victorian-inspired cameo design, mid-century, likely 1940s-1950s Condition: EUC, excellent used / vintage condition, clasp works Dimensions: 1 1/4" x 1 1/16" Features: Carved shell cameo with a woman's profile, small prong-set diamond accent at the neck, detailed gold-plated metal frame with a maker's mark of what appears to be a griffin on the back; rollover clasp