You can either use regular marble cleaner or try removing the stain using grade 0000 steel wool.
Removing dry silicon from marble.
Silicone is not dissolve able when dry so usually you need to scrape or peel it off.
Buy new mildew resistant caulk that s formulated for use in bathrooms and only apply it to surfaces that are bone dry.
Dry the surface around the water stain then rub in a circular pattern over the stain until the stain buffs out of the marble.
If you try these methods and still do not have success contact a professional to assess the problem.
Next scrub the surface with an abrasive pad soaked in mineral spirits to get rid of any silicone residue which will prevent the new sealant from sticking.
Continue to do this until the slick natural stone surface is completely smooth and free from the rough silicone.
This is a nice tool for beginner diyers because it has an angled tip to remove silicone caulk from corners.
Spray the mark with the lubricant and then gently scrape off the stain using a dry cloth.
Wash the spot with a mixture of water and soap to remove any chemical residue before you pat it dry with a cloth or towel.
In most cases this should be sufficient to remove the water stains however if this does not work then we recommended trying a marble cleaner specifically designed to remove hard water stains and soap scum.
Silicone caulk is a flexible type of sealant that s often used to seal openings in high humidity areas like kitchens and bathrooms.
It also has a flat surface that can scrape caulk without scratching tile bathtubs or shower surrounds.
Unlike ordinary caulk which requires special solvents to remove silicone caulk lines can easily be stripped using a couple simple tools just heat the bead for 30 40 seconds with an ordinary hair dryer to soften it.
Has the silicone stained the marble or is it just stuck on it.
Removing silicone caulk residue effectively is a two or three part process.
Usually you can rub the silicone with your finger and it will peel off.
One item you may have on hand that helps soften silicone is mineral spirits which is suitable to get silicone off of hard surfaces like tile marble or concrete for removing it from plastic or painted surfaces however you should use isopropyl alcohol which won t harm the surface regular alcohol you may have for home use may not be strong enough to do the job.
Wipe the area down with a wet rag and buff dry to make the granite shine like new.
One of them is the homax plastic caulk removal tool.
Water stains can be easily removed from marble.
Softening the residue by prolonged exposure to mineral spirits loosens its bond with the substrate.
If there s any wetness fresh silicone won t adhere properly.
Unfortunately rust stains are the most difficult of stains to remove from marble.