This flooring made of a type of limestone that can be left in its natural state and does not require polishing. It is a sedimentary rock formed from calcareous remains of plants and animals or precipitated from solution.

One of several natural stones that are used for paving patios and garden paths. It is sometimes known as travertine limestone or marble. It comes in a variety of colors from grey to coral-red and is most commonly available in tile sizes for floor and wall installations.