Blue John Ring Split Heart Silver. R651. This simple and sophisticated ring is part of our Heritage handmade jewellery collection and boasts two stunning pieces of Blue John stone that have been sourced directly from Treak Cliff Cavern in Castleton. The stones are framed within an exquisite split heart Sterling Silver setting and completed with a classic Sterling Silver band. All our Blue John jewellery is designed and crafted within our very own workshops in Ashbourne, Derbyshire where a team of skilled craftsmen turn the raw Blue John stone into these stunning pieces of jewellery. You can find other matching Blue John jewellery and other Blue John rings on our website Blue John and Sterling Silver ring, dimensions 16 x 17mm heart.