18ct White Gold Blue John 0.60ct Diamond Surround Round Necklace, P2662. This unique necklace features a stunning circular shaped cabochon of the finest Blue John stone, sourced directly from Castleton, Derbyshire. The beautiful 18ct white gold frame is embellished by dazzling 0.60cts of brilliant cut diamonds. The pendant hangs gracefully from a fluid 16 inch long 18ct white gold chain complete with a classic bolt ring clasp for easy wear. 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 matching Blue John jewellery on our website and in stores. All articles are lovingly and securely dispatched with our elegant jewellery packaging. Dimensions 24mm x 16mm, Blue John; 6mm x 6mm