Guide
An etch is a dull mark where acid has reacted with marble. It is often mistaken for a stain. It is a change in the surface itself.
01
Lemon, vinegar, wine, coffee, tomato, some soaps and many bathroom cleaners. Anything acidic left on the stone dissolves a thin layer of calcium carbonate.
02
Wipe spills quickly. Use pH-neutral cleaners. Put toiletries on a tray. On tables, use coasters. A honed finish shows etching less.
03
Light etches on polished marble can be improved with a marble polishing powder. Deeper ones need re-honing by a stone specialist.
Questions
No. A stain is colour absorbed into the stone. An etch is surface damage from acid.
No.
Yes, by honing and re-polishing the surface.
Related