Vivienne turns the spotlight on the light-reflecting rocks originating from Derbyshire caverns… and the accidental invention that changed the history of Sheffield.
PARTLY due to the diminishing fresh supply of Blue John, followed by the recent publicity surrounding the discovery of a new vein in the Hope Valley, all helps to maintain the continuing high value of Blue John. As signi cant pieces have become increasingly difficult
to find, this large 19th Century urn with ormolu mounts in the style of Matthew Boulton is expected to make over £2,000 in a forthcoming specialist auction…