Blue john oval link marcasite silver bracelet b877 this enchanting bracelet boasts seven unmissable oval shaped pieces of blue john stone that has been sourced directly from treak cliff cavern in castleton the blue john stone is set on a delicate sterling silver linked bracelet and is surrounded by mesmerising marcasite stones for a stunning finish the bracelet is completed by a simple clip clasp for easy wear all our blue john jewellery is designed and crafted within our very own workshops