Sterling Silver Marcasite Garnet House Style Fly Brooch. M337. 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 fly brooch is handmade in sterling silver and features deep red Garnet gemstones set into the eyes. The intricately patterned silver body is accented with sparkling Marcasite gemstones which add a vintage feel to the piece. Dimensions: wings measure 14mm across the widest point.