Sterling Silver Blue John Double Drop Necklace. N816. This unique sterling silver necklace features three hand carved beads of Blue John stone which has been sourced directly from Castleton, Derbyshire. One tear drop shaped Blue John bead and a matching tear drop shaped cage cascade from a sterling silver chain which fastens with a lobster style clasp. All our Blue John jewellery is designed and crafted within our very own workshops in Ashbourne, Derbyshire where a team of skilled craftsmen transform natural pieces of Blue John into these stunning pieces of jewellery. You can find other matching Blue John jewellery on our website. All articles purchased from C W Sellors are lovingly and securely dispatched with our elegant jewellery packaging.