Blue john necklace three stone drop silver punq0001750rthis enchanting necklace showcases three unmissable faceted oval pieces of rare blue john stone that has been directly sourced from treak cliff cavern in castleton the stones are placed within an exquisite sterling silver setting that hangs gracefully from the neckline from a delicate silver chainrall our blue john jewellery is designed and crafted within our very own workshops in ashbourne derbyshire where a team of skilled craftsmen t