Egger F637 White Chromix ST10 Square Edge Worktop 4100 x 920 x 25mm ST16 Mineral Plaster This surface has a plaster or spatula look, containing both deep and raw as well as smooth and glossy elements. On reproductions of concrete, metal and stone it creates a finish difficult to tell apart from those actual materials. It provides uni colours with a striking material character. On certain decors, such as Claystone, the surface also achieves a synchronised effect.