Sterling silver blue john twisted loop necklace p088 this elegantnecklace features a twisted loop of sterling silver cradling a circular cabochon of blue john hanging gracefully from a sterling silver chain the pendant makes a wonderful gift suitable for wear on any occasion all our blue john jewellery is designed and crafted within our very own workshops in ashbourne derbyshire where a team of skilled craftsmen transform natural pieces of blue john into these stylish pieces of jewell