ART DECO STYLE SILVER ONYX MARCASITE FILIGREE PIN Vintage German Art Deco revival sterling silver onyx & marcasite filigree brooch mounted with one central cushion shaped 24.5 x 18 mm. Marked "STERLING / GERMANY." Brooch measures: 1.56"L x 1.0"W x 0.375"H. Approx: 0.55 ozt. inclusive.