Sterling Silver Blue John Marcasite Flower link 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 Castleton, Derbyshire. 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 skilled craftsmen transform the natural Blue John stone into these stunning pieces of jewellery. You can find other matching Blue John jewellery and other Blue John bracelets on our website. All articles purchased from C W Sellors are lovingly and securely dispatched with our elegant jewellery packaging.