Sterling Silver Devonshire Snake Blue John House Style Necklace, P1917. This piece is inspired by the Devonshire snake motif taken from the crest of the Cavendish family, commonly found carved out of the sandstone around the Chatsworth estate.This gorgeous pendant features a beautiful circular piece of Blue John adorned with an elegantly crafted Devonshire Snake, framed within a sterling silver setting. A timeless piece that would make the perfect addition to any jewellery lovers collection. 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 and in stores. All articles purchased from C W Sellors are lovingly and securely dispatched with our elegant jewellery packaging.