Sterling Silver Blue John Small Cross Heart Dropper Ring. R641. This stylish ring is part of our Cross Heart collection. It features a small sized hand carved heart shaped Blue John stone that has been sourced directly from the Treak Cliff Cavern in Castleton. The individual highly polished Blue John has been framed within a sterling silver mount that embraces the gemstone in a cross design. 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 jewellery. You can find other matching Blue John jewellery along with matching Blue John pendants on our website. All articles purchased from CW Sellors are lovingly and securely dispatched with our elegant jewellery packaging. Matching items are available within this collection. Dimensions: Approximately Blue John 12 x 13mm.