9ct Yellow Gold Blue John Small Cross Heart Charm. G480. This romantic charm features a stunning heart shaped Blue John stone, sourced directly from Castleton, Derbyshire. The highly polished Blue John has been framed within a 9ct yellow gold mount that embraces the gemstone in a cross design. Attach the beautiful charm using the lobster clasp to fasten to a bracelet or necklace.  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. All articles purchased from C W Sellors are lovingly and securely dispatched with our elegant jewellery packaging. Dimensions: 30x15mm.