9ct Yellow Gold Blue John Oval Celtic Ring. R128. This elegant ring features a large oval cabochon of hand carved Blue John which has been sourced directly from Castleton, Derbyshire. The highly polished Blue John is framed by a unique Celtic-style 9ct yellow gold design. This beautiful ring is completed with a classic 9ct yellow gold band. All our Blue John jewellery is designed and crafted within our very own workshops in Ashbourne, Derbyshire where a team of skilled craftsmen transform the natural Blue John into these stylish 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: Ring face: 21mm x 17mm, Blue John: 15mm x 9mm, Width of band: 3mm.