Rustication (architecture)
(重定向自Prismatic rustication)

In classical architecture rustication is a range of masonry techniques giving visible surfaces a finish that contrasts in texture with the smoothly finished, squared-block masonry surfaces called ashlar. The visible face of each individual block is cut back around the edges to make its size and placing very clear. In addition the central part of the face of each block may be given a deliberately rough or patterned surface.