Caring for marble drink coasters is one of the most difficult types of stone to maintain. This is because marble is a solid resin diamond floor pads base, in the acid base relationship. That means that if any acidic substance comes in contact with the marble that a chemical reaction will occur, causing the stone to discolor. Luckily most marble coasters are treated with an invisible chemical sealant to prevent this, however that does not deny the fact that the sealant can wear down over time, leaving the coasters vulnerable.

 

The best way to wash marble coasters is to simply use a scratch free cloth, along with mild warm water. Do not use soap or other resin diamond hand pads chemical cleansers as these are often acidic in nature. If you have a natural cleansing product that is not acidic, or a marble cleaning product, those can be used.