Blue john three stone link silver bracelet bunq0000478 this unique bracelet boasts three unmissable natural shaped pieces of cabochon blue john that has been sourced directly from treak cliff cavern in castleton the blue john stone has been set onto a sterling silver chain that showcases intricate joint detailing and a classic clasp for easy wear all our blue john jewellery is designed and crafted within our very own workshops in ashbourne derbyshire where a team of skilled craftsmen turn t