Ashlar

=Ashlar= Ashlar blocks were used in the construction of many old buildings as an alternative to brick. Generally the external face is smooth or polished; occasionally it can be decorated by small grooves achieved by the application of a metal comb.
 * Ashlar** is prepared stone work of any type of stone. Stone masonry using dressed stones is known as ashlar masonry, whereas masonry using irregularly shaped stones is known as rubble masonry. Ashlar blocks are great rectangular cuboid blocks that are masonry sculpted to have square edges and smooth faces.