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About Travertine: Travertine (Lapis tiburtinusis), is the rock that took its name from Tivoli, Italy, near Rome. Travertine is a sedimentary carbonated stone, which refers to stone being formed by deposits of minerals and sediment; this is in contrast to igneous metamorphic stone, such as marble. Travertine is a terrestrial sedimentary rock, which is usually found in geothermally heated hot springs and geysers, and limestone caves. When heated carbon dioxide rich water percolates through rocks, carbon dioxide saturates the pores and crevasse of rock; partially dissolving what becomes travertine rock. As water cools, there is a pressure drop, resulting in carbonated rock to recrystallize. Travertine is a dense, banded sedimentary rock (limestone) composed of calcium: calcite and aragonite; and detritic minerals, including clay, quartz. manganese and iron oxides. Traces of iron oxides are sufficient to impart an ochraceus tint to travertine but color is usually associated with clay minerals and siliceous sinter. (Pentecost, A., Ph.D. “Travertine”. 2005. Springer Publishing) The creation of travertine goes through an extra earthy evolution process, where hot and mineral-rich water flows through limestone, resulting in the release of carbon dioxide, helping travertine to create its distinctive look and porosity. Limestone is composed of more than 50% carbonate minerals, generally the minerals calcite (pure CaCO3) or dolomite (calcium-magnesium carbonate, CaMg[CO3]2) or both.