Its main constituents, Calcite and Gypsum, are colorless however minor impurities, other compounds and organic pigments give it common mellow hues of gold, brown and yellow.
Visually travertine will have a holy appearance which can vary from tiny pinholes to large irregular voids. This is due to the presence of gas bubbles when it is formed. Once the travertine is cut into tiles, the holes can either be filled with grout or epoxy fillers or left unfilled.
Travertine has a hardness rating of 3 – 4 on Moh’s scale. It’s a smooth dense stone that is popular because of the wide variety of finishes it is available in. These include a combination of filled, unfilled, honed, polished, chiseled, brushed, chipped and tumbled. It was used extensively in Roman times due to the massive deposits at hand at the base of the Tiburtine Mountains. It was also favored because it is less permeable than marble and much easier to quarry and use than granite.
Tiles and Sink bowls: Very popular in bathrooms
Building stone: The Colliseum and many other ancient buildings in Rome are made of Travertine
Statuary & Chess Pieces
External flooring: Garden and patio paving