Blue john oval foxtail silver earrings e1885rthese simple and stylish stud earrings are part of our foxtail collection and boast two oval shaped pieces of rare blue john stone that has been sourced directly from treak cliff cavern in castleton the stone is set within a sterling silver base that has been embellished by the unmissable foxtail detailing around the edge the earrings are completed by classic post and butterfly fastenings for easy wearrall our blue john jewellery is designed and