Sterling Silver Blue John Marcasite Round Beaded Edge Ring, R806. This feminine ring features a striking round cabochon of the finest Blue John stone, sourced directly from Castleton, Derbyshire. The stone is placed within an exquisite sterling silver scalloped edge setting with Marcasite stones for added sparkle and is completed with a classic sterling silver band. All our Blue John jewellery is designed and crafted within our very own workshops in Derbyshire where a team of skilled craftsmen transform the natural Blue John into these stunning pieces of jewellery. You can find other matching Blue John jewellery and other Blue John rings online and in store. All articles purchased from C W Sellors are lovingly and securely dispatched with our elegant jewellery packaging. Dimensions: 10mm x 10mm, Blue John; 4mm x 4mm