Blue john ring split heart silver r651 this simple and sophisticated ring is part of our heritage handmade jewellery collection and boasts twostunning pieces ofblue john stone that have been sourced directly from treak cliff cavern in castletonthe stones are framed within an exquisite split heart sterling silver setting and completed with a classic sterling silver band all our blue john jewellery is designed and crafted within our very own workshops in ashbourne derbyshire where a team o