Sterling silver blue john marcasite house style dragonfly brooch m328 complementing our sterling silver and enamel designs the introduction of sparkling and natural marcasite stones provides a classic and elegant way to accessorise any outfit with a certain art deco feel accompanied by derbyshire blue john and garnets the collection features wonderful insect earrings brooches rings and pendants this eye catchingdragonfly brooch is hand made in sterling silver and features a beautifully