Sterling Silver Blue John Marcasite Four Stone House Style Butterfly Brooch, M327. This stunning butterfly brooch is handmade in sterling silver and features four beautifully hand carved Blue John gemstones, sourced directly from Castleton, Derbyshire, which are surrounded by a silver frame accented with sparkling Marcasite gemstones. 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.   All our Blue John jewellery is designed and crafted within our very own workshops in Ashbourne, Derbyshire where a team of skilled craftsmen transform natural pieces of Blue John into these stunning pieces of jewellery. You can find other matching Blue John jewellery on our website. All articles purchased from C W Sellors are lovingly and securely dispatched with our elegant jewellery packaging. Dimensions 33mm x 25mm