When calcium carbonate quickly precipitates out of hot springs, a stone called travertine is formed. It has a fibrous appearance, and is usually found in white, tan, and cream colors. It is often used as a building material. Travertine has been used for all types of construction, from ancient bath complexes to famous monuments. For walls, facades, and flooring, Travertine Exclusivo Travertine is a very popular choice stone because of the natural beauty it adds to any space.