Sterling Silver Blue John Four Petal Round Ring, R741. This feminine ring features a stunning circular shaped cabochon of the finest Blue John stone, sourced directly from Castleton, Derbyshire. Four delicate sterling silver petals create a stunning rose that frames the gemstone beautifully.  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 stone into these stunning pieces of jewellery. You can find other matching Blue John jewellery online and in store. All articles purchased from C W Sellors are lovingly and securely dispatched with our elegant jewellery packaging. Dimensions: Blue John; 3mm x 3mm, Flower; 9mm x 9mm