D97

D97 is waterstruck and blue-tempered, i.e. it is fired in low-oxygen conditions. It has four equally usable sides and a rough, changing surface. D97 is made of red clay and is a black brick with a varied play of colour and a wide variety of shades, ranging from whitish and greenish to dark charcoal grey, with some areas of very light grey.

Joint shown: FM5, 1176 Grey