Liquid VIM Bathroom Cleaner Marble Stain.
The day after counter top with sink was installed I washed the sink with liquid vim cleaner and after rinsing I used the same rag to dry the counter top around the sink and taps. In the afternoon I noticed that the counter top around the sink had turned a light gray color. How do I get rid of the discoloring?
Like nearly all common or brand-name household cleaners, Vim bathroom cleaner is too harsh for marble cleaning and will damage marble countertops and floors.
That's why you should use only products safe for cleaning marble
What has occurred is that the cleaner has corroded or "etched" your marble destroying the surface layer creating a dull and discolored area.
Luckily on polished
(that is reflective, shiny) marble countertops you can use ETCH REMOVER / Marble Polishing product
to restore the color and shine.
If severe damage (rough to the touch) ever occurs though, your only option is to call a marble maintenance professional.