Sterling Silver Blue John Marcasite Five Stone House Style Dragonfly Brooch. M324. 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 unique Dragonfly brooch is handmade in sterling silver and features beautifully hand carved 4mm and 5mm Blue John gemstones, sourced directly from Castleton, Derbyshire.  The intricately patterned silver wings are accented with sparkling Marcasite gemstones, which add a vintage feel to the piece.  Dimensions: 45x65mm.