Blue john 3 cushion foxtail silver necklace n963rthis elegant necklace is part of our foxtail range and boasts three cushion cabochon pieces of rare blue john stone that has been sourced directly from treak cliff cavern in castleton the stones are set on an unmissable sterling silver foxtail chain that sits delicately around the neckrall our blue john jewellery is designed and crafted within our very own workshops in ashbourne derbyshire where a team of skilled craftsmen turn the raw blue j