Most often what is meant by “polish”, “polished” or “polishing” is in reference to the type of “finish” on marble, travertine, limestone, granite or any natural stone.
Natural stone can be finished with a number of different surface types, styles or looks depending on what is wanted by the buyer.
A “polished” finish is the shiny, high-gloss type of finish with the deepest color saturation commonly seen on marble and granite countertops.
Because a polished/shiny finish is so common, many people believe that all marble is supposed to be polished or shiny.
However, as noted above, marble (or nearly any stone) can have a number of different finish types.