9ct Yellow Gold Blue John Four Stone Organic T-Bar Bracelet. B473. This elegant bracelet features four organic shaped Blue John stones, sourced directly from the Treak Cliff Cavern in Castleton. The individual highly polished gemstones have been framed within 9ct yellow gold mounts with alternating gold bars between each stone. The bracelet is secured by a T-bar style fastening. All our Blue John jewellery is designed and crafted within our very own workshops in Ashbourne, Derbyshire where a team of skilled craftsmen turn the raw Blue John into these stylish pieces of jewellery. You can find other matching Blue John jewellery and other Blue John earrings on our website. Your purchase will be securely dispatched with our elegant, personalised jewellery packaging.