Travertine
Travertine is a natural stone with a homogeneous and very hard texture, formed mainly in volcanic regions. In these areas, water has carbonate precipitation.
Travertine is usually white. However, it is also found to have yellow travertine, beige or red color due to other minerals such as iron during formation.
In travertine there are holes The characteristic gas due to the formation of bubbles of carbon dioxide gas is trapped in the rocks. Below is a picture of natural stone travertine
