Marble is a compact metamorphic rock formed from limestone rocks which, subjected to high temperatures and pressures, reach a high degree of crystallization. The basic component of marble is calcium carbonate, whose content exceeds 90%; The other components, considered impurities, are those that give a great variety of colors in the marbles and define their physical characteristics.
After a process of polishing by abrasion the marble reaches high level of natural brightness, that is to say, without waxes nor chemical components. Marble is mainly used in construction, decoration and sculpture. It is sometimes translucent, of different colors, such as white, brown, red, green, black, gray, yellow-blue, and which may appear uniform in color, marbling (splashing), veining (weaving of lines) and various configurations or mixtures between them.