Marble is a beautiful surface for counters and tabletops. But because it is quite soft and porous, marble can easily be stained, scratched, and chipped. To help prevent staining, marble surfaces are often coated with protective sealers. Depending on use, these coatings should be reapplied every year or two. Regular cleanings should be as gentle as possible. Dust the surface once or twice a week with a soft cloth. Wash the marble periodically with a cloth dampened with warm water, and, if necessary, a bit of mild dishwashing liquid. Remove the soap with another damp cloth. Never use dusting sprays or abrasive cleaners on your marble. Apply marble polish (available in hardware stores) on a regular basis to maintain the stone's luster.
To prevent ring marks, place coasters or trivets under glasses and dishes. Use mats or runners beneath hard objects that might scratch the surface. And always blot spills up immediately and rinse with a clean, damp cloth. If your marble does stain, you can try to remove it with a poultice made especially for drawing out stains.