The Marble Maintainence FAQ Marble is stone that is generally polished and used in fine building work, furniture, or decorative art. It may be white or colored. It is porous, and easily stained.
Marble is etched by acids.
Wipe off anything spilled on marble immediately, as you would on a wood surface. Avoid setting beverage glasses directly on marble as they leave rings. Seal the marble with paste or sealer to prevent stains and soil from being absorbed into the porous surface. Do not let acids contact the marble as they will etch it. Strong alkaline solutions are absorbed by the marble and break down the surface leaving it rough.