Sterling Silver Blue John Double Sided Oval Large Fob Necklace, P150 This statement necklace features a cabochon oval shaped piece of rare Blue John stone that has been sourced directly from Castleton, Derbyshire. With a unique double sided stone, this necklace is placed within a sterling silver setting that hangs perfectly from a sterling silver chain complete with a classic bolt ring 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 stylish 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.