Blue john flower link marcasite silver bracelet b879 this exquisite sterling silver bracelet boasts five unmissable flowers each showcasing an impressive round piece of blue john stone that has been sourced directly from treak cliff cavern in castleton surrounding the blue john stone a twisted petal detailing has been embellished with marcasite for a sparkly finish all our blue john jewellery is designed and crafted within our very own workshops in ashbourne derbyshire where a team of ski