Silver blue john oval pierced shoulder ring r146 this simple femininering part of our heritage handmade jewellery collection featuresa strikingovalshaped cabochon of rare blue johnstone sourced directly from the treak cliff cavern in castleton derbyshirethe stone is framed within an exquisite sterling silver setting with pierced shoulderdetail and completed with a classic sterling silver band all our blue john jewellery is designed and crafted within our very own workshops in ashb