Blue john necklace framed marquise silver p861 this simple and sophisticated necklace is part of our heritage handmade jewellery collection andboasts a stunning marquiseshapedpiece 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 desi