Sterling Silver Blue John Cushion Ring, R406. Part of our handmade Heritage jewellery collection, this simple yet stunning ring features a highly polished cabochon of natural Derbyshire Blue John, framed into a cushion shaped sterling silver setting on a classic band, making this ring perfect for everyday 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 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: Blue John; 10mm x 10mm, band width; 3mm