9ct Yellow Gold Blue John Diamond Shaped Necklace. P390. This simple and sophisticated necklace is part of our Heritage handmade jewellery collection and features a diamond shaped piece of fine Blue John stone sourced directly from Castleton, Derbyshire. The stone is framed within an exquisite 9ct Yellow Gold setting. Sold complete with an 18 inch 9ct Yellow Gold chain that is completed by a classic bolt ring 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 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.  Dimensions: 28mm x 10mm, Blue John 19mm x 9mm.