Sterling Silver Blue John Curved Triangle Ring, R407. This exquisite ring is part of our handmade Heritage collection and features a stunning cabochon of the finest natural Blue John which has been sourced directly from Castleton, Derbyshire. The highly polished stone is framed in a simple sterling silver setting and completed with a classic sterling silver band. A beautiful addition to any jewellery lover\'s 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. All articles purchased from C W Sellors are lovingly and securely dispatched with our elegant jewellery packaging. Dimensions of Blue John (from point to point); 11mm x 11mm x 11mm