Sterling Silver Blue John Round Stud Earrings, E805. These classic stud earrings feature an array of inlaid Blue John gemstones in different cuts, sourced directly from Castleton, Derbyshire. The highly polished gemstones are set with sterling silver with post and butterfly fittings. Perfect for any occasion and a staple piece for your jewellery box. 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.