Antique Art Deco Shell Cameo Brooch & Pendent Beautifully Carved Gold or Gold Plated

Nice Stylish Art Deco Shell Cameo Brooch. Beginning of XX century. Sold to me as 10K Gold but no marks of Gold, so it’s could be the Gold Plated. This measures 1 1/2” tall overall and with size of the Cameo is 1 1/4”. This is in very good condition. No stress lines, chips. Few patina spots on the back of the brooch. Good to wear and great for collection!