Nothing is more beautiful than a polished marble countertop. It looks amazing, but marble can also be a pain to keep stain free. This is due to its porous surface. To help prevent marble stains you should always blot a stain and avoid rubbing it into the surface.
Darker toned beverages such as tea and coffee have stained more kitchen counters than you can imagine. These pesky stains will hydrate marble counters but only to the extent that the stain is held within the porous surface.
Applying hair bleach or hydrogen peroxide can often be used to remove coffee stains from marble countertops, floors, or anywhere you happened to make a mess.
The ingredients in oily mixtures such as peanut butter, margarine, cosmetic makeup, and creams can end up leaving dark nasty stains on your marble surfaces. You can normally remove these stains from marble countertops on the first try by using a lukewarm water and concentrated ammonia mixture. More annoying stains, might require several applications.
If this doesn’t do the trick, try creating a paste from powered whiting, a calcium carbonate de-greasing powder, and acetone (which is found in household items like nail polish remover). Apply the paste to the stain and leave it for a day or two.
Rust & Soot Stains
Marble is often used alongside metal objects, which can stain the polished surface and allow oxidation and rust buildup. When given attention early on, these stains can be removed easily with a small wire brush that will reach into the crevices without damaging the polished surface. Stains that are really set in will require chemical treatment to pull the rust out.
Black soot can normally be removed with soap and water or a gentle baking soda scrub followed by an overnight wet paste treatment. However, like rust stains on marble, this could also require some wire brushing. Re-polishing the marble might be required once the stain has been removed.
The acids in fruit juice can produce nasty little stains on your marble surfaces. A hydrogen peroxide and polishing powder mixture is a good choice to remove the stain. However, acid stains are hard on the finish. Once the stain removal is complete the surface will, most likely, need to be re-buffed to regain its polished beauty.
Liquids will easily soak into the pores of the marble surface. However, these stains look much worse than they are. Apply a paste mixture of whiting powder and hydrogen peroxide. Let it sit overnight before removing and then rinse with warm water. If part of the stain is still hanging on, just repeat the process until it disappears.