Originally found as a wild seedling growing in a hedgerow in Brenchley, Kent, UK by a farm labourer called Diamond. It was propagated and introduced in 1830 by a nurseryman called Hooker.
Medium large oval fruit with a rather pointed end. A light blue bloom over the almost black skin gives an attractive glowing appearance to the fruit. The pale yellow flesh is quite dry and acid. Very good damson-like flavour and colour when cooked. Excellent for bottling. Good for freezing and using as a cooking plum during the winter.
Produces a vigorous upright tree. Irregular cropping. Will grow on its own roots.