Blot up (don’t wipe) spills imediately, before they penetrate the surface. WIping the area may spread the spill. Clean the area with water and mild soap and rinse several time.
Use a natural stone cleaner, stone soap (available in hardware stores or from a stone dealer), or mild dishwashing liquid and warm water. After washing with soap, rinse and wipe with a clean soft cloth.
Oil Based Stains (grease, oil, milk, etc.) - Scrape away the mixture with a wooden utensil and rinse. Use hydrogen peroxide intead of dishwashing liquid - or try ammonia on it.
Organic Stains (coffee, tea, fruit, etc.) - Try a mixture of 12 percent hydrogen peroxide mixed with a couple drops of ammonia for an organic stain.
Ink, Marker, Wine Stains - Use a lacquer thinner or acetone to remove stains from darker stone. On light-colored granite, use hydrogen peroxide on these stains. This also works for wine stains.
Ask a professional to remove or repair a scratch
Use coasters under all glasses, particularly those containing alcohol or citrus juices. Many common foods and drinks contain acids that can etch or dull the stone surface.
Do not place hot items directly on the stone surface. Use trivets or mats under hot dishes and placemats under china, ceramics, silver or other objects that could scratch the surface.
Do not use products that contain lemon, vinegar or other acids
Strong detergents or corrosive liquids can dull the polished stone’s surface and should not be used.
Do not use abrasive cleaners such as dry cleansers, scouring powders, or ‘soft’ cleansers.
Materials and installations are designed specifically for countertop use; avoid standing on countertops.
Tough stains may require a poultice
RE-SEALING NATURAL STONE
Reseal the countertop every one to five years depending on the material and sealer being used. Materials vary in denseness and porosity. Use a non-toxic sealer on food preparation areas.