Silver blue john white mother of pearl split heart ring r651 this simple and sophisticated ring is part of our heritage handmade jewellery collection and boasts stunningblue john stone that have been sourced directly from treak cliff cavern in castleton and white mother of pearlthe stones are framed within an exquisite split heart sterling silver setting and completed with a classic sterling silver band all our blue john and mother of pearl jewellery is designed and crafted within our very