RARE Los Castillo vintage Taxco Mexico sterling silver and raw onyx brooch pin The brothers Castillo all apprenticed for William Spratling In 1939 they opened Los Castillo From their onyx negro series Sterling silver raw black onyx and enamel Stamped with makers mark See photo for measurement Pre owned in good condition Buy from a Poshmark ambassador and party Cohost Mexican silver Antique sterling jewelry Sterling silver Mexican jewelry Vintage sterling silver Vintage sterling silver Mexican jewelry Antonio Pineda Fred Davis boho bohemian boho chic festival unique original edgy versatile whimsical artisan silver Hopi gypsy vintage antique Carolyn Pollack Hector Aguilar Victorian dramatic exotic timeless tribal bold Sajen gift Native American Georg Jensen Anthropologie Sigi Pineda Navajo artisan brilliant bold casual charming chic Mary Gage Zuni comfortable Kendra Scott contemporary Coro cool coordinating James Avery cute Barse Lous Hill delicate decorative Silpada Milor detailed Victoria elegant gothic Beto eye catching fancy Lillian Pines fashionable feminine Taxco old pawn estate James Avery find funky Sundance lovely pierced Jo Michels Judith Ripka precious The Kalo Shop sexy sparkly Tiffany stylish stunning estate jewelry Margot de Taxco Valentines Day birthday William Spratling anniversary Villasana Salvador Teran sweet 16 Mothers Day fringe natural earthy Los Castillo Los Ballesteros Chicago Arts and Crafts