C w sellors necklace tear drop blue john and silver p049rthis simple and stylish necklace boasts an unmissable cabochon tear drop shaped piece of rare blue john stone that has been sourced directly from the derbyshire blue john cavern in castleton the stone is placed within an exquisite sterling silver tear drop design that hangs gracefully from a delicate sterling silver chain complete with a classic bolt ring clasp for easy wearrall our blue john jewellery is designed and crafted within ou