Nowadays, for reasons of convenience and cost, people do not usually construct the entire wall in stone; they only clad the outer surface. In construction there are two ways to do that, the most simple and cheapest of which is by using polygonal shale (slates), or plates cut to specific dimensions, generally 1 to 3 cm. thick. Fixing this decorative outer layer on a wall is effected ??with plaster or glue and it is mostly used indoors. Alternatively, thick polygonal stones, such as solid stone structures, chipped by a craftsman, may also be formed to a desired aesthetic whole.
More wainscot stones you can find under the references “machine-cut stones” and “building stones”.