The phrase "natural stone" refers to rocks that are found in nature and have been used for construction or decoration purposes. These stones are not man-made, but are formed by natural geological processes over a long period of time. Full definition
The bathroom floor as well as the shower enclosure is tiled all the way up to the ceiling with natural stone mosaic tiles. (besagm-interiors.com)
To create a Greek or Roman - inspired style, look for natural stone flooring, such as limestone or marble which are popular choices in both classical and modern Greek homes. (hersite.info)
Using natural stone tile is also a great way to give your space an authentic, rustic Italian look. (marazziusa.com)