Sterling Silver Blue John Toscana Offset Teardrop Ring. R514. Discover our stylish Toscana collection with this handcrafted sterling silver ring. Simple and elegant, it features fine Blue John stone sourced directly from Castleton, Derbyshire. The cabochon is flush set into the highly polished band for a smooth, contemporary finish.  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 stunning pieces of jewellery. You can find other matching Blue John jewellery on our website. All articles purchased from C W Sellors are lovingly and securely dispatched with our elegant jewellery packaging. Dimensions of stone: 12mm x 6mm.