Silver Filigree Brooch Purple Paste Stones. This design is a little Victorian and a little Steam Punk. This handsome silver brooch measures 3 inches long and 1.5 inches wide. No signature for metal content but it is some grade of silver. We believe this to be stamped sterling. The center hosts a floral overlay and three amethysts purple paste stones. This fancy filigree brooch closes with C Clasp. This antique Edwardian purple paste and sterling filigree brooch is in very good condition.