Blue john necklace large pear shaped silver punq0003832rthis unmissable necklace boasts a stunning cabochon tear drop shaped piece of rare blue john stone that has been sourced directly from treak cliff cavern in castleton the stone has been placed within a simple sterling silver setting and hangs gracefully from a delicate silver chain completed by a classic bolt ring clasp for easy wearrall our blue john jewellery is designed and crafted within our very own workshops in ashbourne derbyshir