Unfortunately rust stains are the most difficult of stains to remove from marble.
Remove stains and polish cultured marble.
Below are two stain removal methods.
Cultured marble a mix of marble powder and a polyester resin requires a gentle touch when it comes to cleaning.
One for removing mineral deposits and the other for removing general stains.
Place the vinegar dampened rag over the buildup or stain on your cultured marble.
And you ll have to cover that spot with high gloss finish and match the sheen to the rest of the sink.
Make sure the rag is flat against the stain and the wet parts of the rag touch it.
Drape the wet rag on top of stains or buildup.
Water stains can be easily removed from marble.
If you try these methods and still do not have success contact a professional to assess the problem.
Avoid using abrasives which may damage the surface.
Pour a little isopropyl alcohol on a cotton ball or cloth and apply to a small out of the way area of the cultured marble.
You can wet stand the stain on that cultured marble sink sure but then you ll remove the finish and end up with a bare spot.
Removing ink stains using isopropyl alcohol.
Cultured marble is a beautiful material but one that requires special care to keep it in good condition.
You can either use regular marble cleaner or try removing the stain using grade 0000 steel wool.
A stain around the drain is likely from mineral deposits from the water that commonly sits in that area.