Sterling Silver Blue John Round Scroll Ring. R067. This elegant ring is part of our Heritage handmade jewellery collection and boasts a striking round cabochon of the finest Blue John stone that has been sourced locally from Castleton, Derbyshire. The stone is set within an exquisite Sterling Silver scroll design and completed with a classic Sterling Silver band. All our Blue John jewellery is designed and crafted within our very own workshops in Derbyshire where a team of skilled craftsmen transform the natural Blue John into these stunning pieces of jewellery. You can find other matching Blue John jewellery and other Blue John rings online and in-store. Dimensions: Blue John Stone: 8mm.