9ct yellow gold blue john four stone organic t bar bracelet b473 this elegant bracelet features four organicshaped blue johnstones sourced directly from the treak cliff cavern in castleton the individual highly polished gemstones have been framedwithin 9ct yellow goldmounts with alternating gold bars between each stone the bracelet is secured by a t bar stylefastening all our blue john jewellery is designed and crafted within our very own workshops in ashbourne derbyshire where a tea