Marble is limestone that has been subjected to great pressure and heat, which has changed its structure to a crystalline, sugary texture. It is generally white or whitish, sometimes translucent, with some veining or color provided by other minerals present at its formation.
Marble Facts
Can I use marble on my kitchen counters?
Yes. However, because marbles (and limestone and travertine) are calcium carbonate, the polished surface is more vulnerable to household acids including vinegar, mustard, catsup, citrus and a host of other food-related products. These acidic substances cause a chemical reaction which will remove the polish.
Additionally, marble and limestone can be scratched more easily than harder stones such as granite. Marble is, however, sometimes used in the kitchen as a pastry slab; its perfectly smooth, cool surface is ideal for rolling out dough and piecrusts.
What is honed marble or limestone and where is can it be used?
Marble, travertine, or limestone that is honed has a matte or satin finish, rather than a high reflective polish. This is achieved at the factory by stopping just short of the last stage of polishing. One feature of honed marble is that it doesn't show etching as readily, or wear patterns on floors. It is preferred by some because it has a less formal, softer appearance than polished stone.
What is etching?
Etching occurs when acid in some form comes in contact with a polished marble or limestone surface. This causes a chemical reaction which removes the polish, or roughens the surface of honed marble or limestone. Granite is impervious to any common household acids.
What's the best way to clean marble and other stones?
The old rule of thumb is never to use anything you wouldn't use on your hands. Never use powdered cleansers or abrasive pads to clean your stone. Even "soft scrub" type cleaners contain pumice, which is powdered volcanic stone, and might damage your stone countertops or floors. Never use any product which is acidic; this includes substances like ammonia or many common liquid cleaners.
You should always use sealers and cleaning products designed specifically for natural stone. A complete selection of cleaners and maintenance products are available from GraniteForYourHome.com.