All elements are designed in a modular manner on the base of a unitary length. They include elements comprising more than one square having side lengths a and a camfered edge b at an angle of 45.degree.. The elements, which can be produced in the form of paving stones, or thin ceramics tiles, or trough stones and can be laid out to create floor or wall coverings, allow to lay out all letters, numbers or common symbols, as well as a great variety of other figures, and to provide them with straight-lined borderings without the need of breaking, grinding or otherwise altering a single element. It is understood that said elements can be differently colored in order to emphasize them.