Sterling Silver Antique Victorian Style Black Onyx Pin / Brooch. This lovely pin features a center mounted square cut Black Onyx Gemstone and an open work design with classic shapes that are in a Antique Victorian Style. This heirloom quality piece is timeless in style and could be handed down through the family for generations. Please see our complete selection of Sterling Silver pins / brooches. This brooch is new and a quality sterling silver antique and collectible reproduction.