Sterling Silver Blue John Round Twist Ring, R030. Part of our handmade Heritage collection, this simple ring features a stunning Blue John gemstone, sourced directly from Castleton, Derbyshire. An elegant twist detail in the highly polished sterling silver band frames the hand carved cabochon. 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 width of ring 10mm, Blue John; 6mm x 6mm