Blue john necklace oblong silver small p451 this simple and sophisticated necklace is part of our heritage handmade jewellery collection andboasts a stunning cabochon oblongpiece of blue john stonethat hasbeen sourced directly from treak cliff cavern in castletonthe stone is framed within an exquisite sterling silver setting the pendant sits gracefully on a delicate sterling silver chain that is completed by a classic bolt ring clasp for easy wear all our blue john jewellery is designe