1875 Jet is the fossilised remains of driftwood. In Britain, the main source is Whitby, in Yorkshire. It became particularly popular in mourning jewellery in the mid 19th century. The first industrial jet workshops in Whitby, using lathes to carve the jet, were set up in 1808. By 1872, the industry employed up to 1500 men, women and children. The custom of wearing mourning dress was encouraged by Queen Victoria’s prolonged mourning after the death of her husband Albert in 1861.