Blue john ring round silver small r609 this striking statement ring part of our heritage handmade jewellery collection boasts anunmissable cabochon roundpiece of rare blue john stone that has been sourced directly from treak cliff cavern in castletonthe stoneis set within an exquisite sterling silver settingand completed with a classicsterling silver band all our blue john jewellery is designed and crafted within our very own workshops in ashbourne derbyshire where a team of skilled