Mother-of-pearl, presenting a hardness of 3 to 5 on the Mohs scale, can also be used for making floors. As far as furnishings are concerned, it can be used as an inlay on wooden floors or inserted into marble with a particular technique covered by our invention patent, through which it is possible to use, compared to a few years ago, the whole range of colors of the paste browse and not just the natural colors. The coverings, on the other hand, allow for a more fantastic use since, since there is no limit to flatness, it is also possible to use it with 3D processes that give particular situations of reflections, lights and colours.