Blue john silver and marcasite 6 point star stud earrings e1638rthese simple and stylish stud earrings boast two small round pieces of rare blue john stone that has been sourced directly from treak cliff cavern in castleton the stone is set within an exquisite sterling silver star design that has been embellished by marcasite stones adding an unmissable sparkle to the piece the earrings are completed by classic post and butterfly fastenings for easy wearrall our blue john jewellery is desi