When calcium carbonate quickly precipitates out of hot springs, a stone called travertine is formed. This fibrous stone is usually found in cream, white, and tan colors. It has been used in construction for thousands of years. The Romans used it to build temples, monuments, and even the Colosseum. (aqueducts, bath complexes, amphitheaters). For walls, facades, and flooring, Travertine Exclusivo Travertine is a very popular choice stone because of the natural beauty it adds to any space.