Butterfly Pin Brooch Art Nouveau Style 925 Sterling Silver English Hallmarks Set With Clear Crystals. Classic and traditional, this sterling silver butterfly brooch set with crystals is a simple yet spectacular design. Designed and crafted in Britain from hallmarked sterling silver, all of our products are finished to premium standards and this butterfly brooch is no exception. Delicate and intricate, the crystals have been set to create the appearance of beautiful markings and patterns on the butterfly’s wings. 925 hallmarked sterling silver crystal butterfly brooch. Set with clear crystals. Comes complete with a silver care kit. Supplied in a Gift Box with a Certificate of Authenticity. Dimensions: 50mm x 48mm (2 inches x 1 7/8 inches).