Sterling silver blue john round celtic dropper earrings e975 an elegant pair of earrings featuringhand carved cabochons of blue john gemstones which havebeen sourced directly from the derbyshire blue john cavern in castleton the blue john is framed by a unique celtic design of sterling silver the earrings are completed bypost and butterfly fittings for secure and easy wear all our blue john jewellery is designed and crafted within our very own workshops in ashbourne derbyshire where a