Sterling silver blue john medium oval bangle b020 this simple and sophisticated bangleis part of our heritage handmade jewellery collection and boasts astunning oval piece of blue johnstone that hasbeen sourced directly from the treak cliff cavern in castletonthe stone is framed within exquisite sterling silver and the bangle is completed with a wide solidsterling silver band measuring 10mm across at its widest point all our blue john jewellery is designed and crafted within our very