Water Stains On Marble Sink

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.
Water stains on marble sink. Then i took an old toothbrush and scrubbed it on in the affected areas. Above the etch mark wipe the surface clean of any grit of dirt. Rinse the paste away with clear water. Add the polishing powder.
Unsure which marble polishing powder. Mold is a common problem in many bathroom settings. It could also simply be water absorbing into the marble which will darken the area to a more gray color. Dry with a soft cloth.
If you use ammonia put on a pair of rubber gloves to protect your hands. Cover the area with plastic wrap for 24 hours. Difficult stains remove more difficult stains and water spots with a thick paste of baking soda and water. But pure water does not stain marble sinks or countertops or tile.
I mixed about a tablespoon no i did not measure of the barkeeper s friend with a few drops of water in a small pyrex glass bowl to create a paste. Most likely the dark stain you are seeing around the sink drain is either from mold growth or a rust stain developing. Rub the paste into the stain with a soft cloth. Water stains are yet another common stain that occurs on marble.
Finally i wiped it off with a damp paper towel. Buff hard water accumulations using. I found a way to remove water stains from marble successfully. Mold can stain marble bathroom countertops floors etc.
Marble countertops and other surfaces are no stranger to ink stains.