A marble is a metamorphic rock formed by alteration of limestone or dolomite, often irregularly colored by impurities and used especially in architecture and sculpture. Marble tiles are suitable for bathrooms, entryways and fireplaces, living & dining areas. Marble floor tiles are also used for both interior and exterior flooring applications. Some of the different colors of marble are white, red, black, mottled and banded, gray, pink, and green.