Natural marble is a metamorphic stone. It is a rock composed of calcium magnesium carbonate, and it has naturally recrystallized due to pressure, heat, and aqueous solutions. It is a hard rock that changes colors when exposed to acidic substances. Marbles are used principally for buildings and monuments, interior decoration, statuary, table tops, and novelties. Colour and appearance are their most important qualities. Marble is easy to clean and maintain. Gentle soap and warm water are enough to get the job done. Cleaning a marble countertop is as simple as washing it down with a solution of water and soap, wiping with a wet, hot dish towel, and then drying the countertop with an absorbent towel.
Depending on the amount of and type of impurities in a given marble slab, it can range from white to various shades of grey or tan in most cases. However, marble can occur in various colors. The porosity of a particular stone can vary depending on the composition. Additionally, marble normally has a hardness ranging from 2 to 4 on the Mohs scale of mineral hardness.