Sterling silver blue john medium cross heart charm bracelet b681 this elegant bracelet is part of our cross heart collection it features a medium sized hand carved heart shaped blue john stone that has been sourced directly from the derbyshire blue john cavern in castleton the individual highly polished blue john has been framedwithin a sterling silver mount that embraces the gemstonein a cross design completed with an oval linked lobster clasp all our blue john jewellery is designed and