9ct yellow gold blue john five stone oblong bar bracelet b636 this elegant bracelet features five curved oblong shaped blue johnstones that have been 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 stonethe blue johnis solidly backed in 9ct gold and the bracelet is secured by a lobster clasp fastening all our blue john jewellery is designed and craft