31cm by 23.5cm (flat tile) The gradient is obtained by mixing two solid colours - here blue and white as in last image - into eachother, via a repeated fold and rolling technique. The two colours blend into eachother during this labour intensive process. The plaque is the exact dimensions of a standard Boeing 737 airplane window. Slight second, with some folding stripes on the surface. They show when light rakes over the surface 55% discount. Comes with a seperate plate hanger. Coloured porcelain. Polished.