Sterling silver blue john three stone oval foxtail bracelet b978 this stunning bracelet is part of our foxtail collection designed and made by c w sellors the piece features three oval shaped blue john stones that have been directly sourced from treak cliff cavern in castleton the stone is set on an intricate sterling silver foxtail chain that is fastened by a strong magnetic clasp for easy wear all our blue john jewellery is designed and crafted within our very own workshops in ashbourne