Nearly always unless the glass was actually made of some type of metal the rings are not stains but actually etching that has corroded the marble.
Cleaning rings off marble.
Since marble is softer than other natural stones such as granite it is more susceptible to staining from cooking and spills.
Marble tables are highly susceptible to water rings and water marks.
Cultured marble is a beautiful material but one that requires special care to keep it in good condition.
When the water evaporates it leaves behind calcium and magnesium which form an unsightly stain on your marble.
When a glass is set down on a marble table condensation can drip down the outside of the glass and create a pool of water.
Marble is made of calcium carbonate and reacts chemically with acidic things like coffee juice soda wine fruit dressings sauces alcoholic drinks and the list goes on.
The slightest delay in removing a sweaty glass from a marble countertop can result in serious glass rings that mar the beautiful look of your counters.
But cleaning them requires more care than other surfaces.
If you spilled anything oil based like a vinaigrette.
You treasure your gorgeous marble countertops in your kitchen or bathroom.
A stain around the drain is likely from mineral deposits from the water that commonly sits in that area.
1 x research source clean up orange juice wine and coffee as soon as they are spilled.
Beyond cleaning and re sealing make sure that you are exercising caution around your marble surfaces.
In addition spots result from water splashing around the sink.
Either way you can often remove these rings.
Marble stains very quickly especially if a liquid is allowed to sit untouched for a period of time.
One for removing mineral deposits and the other for removing general stains.
Below are two stain removal methods.
A very common example is a dull ring that is left from an acidic liquid that spilled from a glass cup.
So it s a known marble maintenance issue and a real nuisance for cleaning marble kitchen countertops since it s impossible to prevent etching in the kitchen.
For most organic food stains the marble institute recommends cleaning with a solution of 12 hydrogen peroxide and a few drops of ammonia.
An etch mark is a physical alteration of the marble surface.
If your budget can tolerate it buying a commercial neutral ph marble cleaner probably is an excellent investment to clean these beautiful stone countertops most safely one that doesn t risk scratching or etching from a homemade cleaner.
From bright whites to dark browns and black marble there are plenty of options to choose from.