Sterling Silver Blue John Round Celtic Stud Earrings. E149. These elegant round earrings feature hand carved Blue John gemstones which have been sourced directly from the Treak Cliff Cavern in Castleton. The highly polished Blue John stones are framed by a Celtic-style cross-hatching design of sterling silver, with the earrings fixed with secure post and butterfly fittings 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 along with matching Blue John pendants on our website. All articles purchased from CW Sellors are lovingly and securely dispatched with our elegant jewellery packaging. Matching items are available within this collection. Dimensions: Earrings 14mm diameter, Blue John 7mm diameter.