Silver blue john oblong drop earrings e226 these simple and sophisticated earrings are part of our heritage handmade jewellery collection and boast two stunning oblong piecesofrare blue john stones that havebeen sourced directly from treak cliff cavern in castleton thestones are framed within classicsterling silver settings the dropsare completed by post and butterfly fastenings for easy wear all our blue john jewellery is designed and crafted within our very own workshops in ashbourn