It is sometimes known as travertine limestone ortravertine marble; these are the same stone, although travertine is classified properly as a type of limestone, not marble. The stone is characterised by pitted holes and troughs in its surface. … Travertine is most commonly available in tile sizes for floor installations.

The red colour of travertine and its different intensity is due to the presence of iron carbonate. This natural stone is mostly formed at the mouth of hot springs or inlimestone caves, where it forms different speleothems (cave formations), such as stalactites and stalagmites.

Travertine shower tile. To use travertine in the shower and other high moisture areas, it’s important that you properly seal it with a suitable sealer. This will prevent the travertine from absorbing water (travertine is a porous stone after all) and make it easier to maintain.