The stain gets more pronounced as time goes on increasing in size and darkening in color.
Marble stain test.
And some granite may not be true granite but a mutt stone that maybe is mixed with calcite like marble and the surface will corrode or etch when exposed to acids like lemon juice coffee alcohol salad dressing.
This can be restored by your marble contractor.
For instance blue pearl granite absorbency is typically much lower than white granite so blue pearl is much harder to stain.
Mold is a common problem in many bathroom settings.
These stains can be the result of a water glass that was left on a marble countertop for too long or from hard water buildup around sinks and showers.
How to remove ink stains and paint stains from marble surfaces you can use lacquer thinner to get ink stains from markers pens etc and small amounts of paint out of marble.
Even after 10 minutes we can see the residual stain from the olive oil.
More persistent ink stains and larger paint stains can be removed with the help of a marble poultice that will soak up the pigments from the stain within a couple of days.
On the other hand if a stain is present where the mineral oil was you will need to seal marble and or granite with a petroleum based sealer.
Water stains are yet another common stain that occurs on marble.