A beautiful Blue John stone in a hallmarked sterling silver tension bangle. The stone is 20mm by 20mm and has been specially cut for this rounded triangle design. Handmade in our Sheffield studio by Andrew Thomson.
As all stones are created naturally, each one is unique and therefore may vary from those shown in the photos.
Blue John (also known as Derbyshire Spar) is a semi-precious mineral, a form of fluorite with bands of a purple-blue or yellowish colour. In the UK it is found only at Blue John Cavern and Treak Cliff Cavern at Castleton in Derbyshire. During the 19th century, it was mined for its ornamental value, and mining continues on a small scale.