Sterling silver blue john 27mm cushion foxtail bracelet b958 this stunning bracelet is part of our foxtail collection designed and made by c w sellors the piece boasts a cushion cabochon blue john stone that has been sourced directly from the treak cliffcavern in castleton the blue john is set on an intricately woven 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 a