TRAVERTINE, a natural stone from the Limestone family, can, over time, transform into Marble and is often called Travertine Marble. Made of calcium carbonate and usually found near warm or hot springs, it was frequently used in ancient times as a building material. Today, Travertine is most commonly used for countertops, flooring, shower and tub surrounds as well as in exterior decor. Aside from its obvious beauty (available in colors and finishes - from natural, neutrals such as creamy white and gold, to tan and reddish brown depending upon the impurities and iron content), durability is one of the elements that lead people to choose Travertine.