Matthew Boulton, a famous manufacturer in the 1700s, made many urns and other decorative objects using Blue John. The stone became a symbol of British art and was sought after by the elite.

Blue John was subsequently mined for this purpose, stripping the region of large veins of the precious stone. As a beautiful mineral, it’s coveted for jewelry and ornaments, with examples online ...

A "lost" vein of rare Blue John stone is rediscovered in a Peak District cavern after a 68 year search.