The bad news? Marble is delicate. It’s a calcareous stone, meaning harsh chemicals or abrasive scrubbing can etch (dull) the surface or leave permanent scratches.

Have a stubborn stain that won't budge? Call a stone restoration professional. An acid etch or deep oil stain is sometimes worth the $100 service call to save a $2,000 marble sill.

Marble window sills add a touch of timeless elegance to any home. But because they sit directly in the path of UV rays, open windows, and plant pots, they tend to collect dust, pollen, water spots, and grime faster than other surfaces.