Kebur Contempo Thunderstorm Porcelain Paving is a high quality Italian porcelain supplied in a 450 x 900 x 20mm size to provide that modern linear format. Thunderstorm porcelain paving has a dark grey-blue colouring, with lighter white-grey streaks running through. Thunderstorm has a gently riven surface and moderate shading variation akin to that of natural stone. Photo courtesy of Classical Landscapes