C w sellors locket blue john and silver p2101rthis stunning locket boasts an unmissable cabochon square 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 square setting that showcases twisted rope detailing around the edge the pendant hangs gracefully from a delicate sterling silver chain complete with a classic bolt ring clasp for easy wearrall our blue john jewellery