Marble etching occurs when acidic substances chemically react with the calcium carbonate in the stone, leaving dull, light-colored spots or rings on the surface. Unlike stains that penetrate the stone, etches are surface damage that remove the polish, and the good news is they can often be repaired at home using fine polishing powder, patience, and the right technique. Light etches typically take 10 to 15 minutes to fix, while deeper damage may require professional restoration.
Key Takeaway: Etching is a chemical reaction that dulls the marble’s surface, not a stain that penetrates it. …









