Cleaning a natural stone surface with the wrong product can remove its natural beauty. You can actually shorten the stone’s life or alter the natural stone’s color by using the wrong chemicals and tools. 
Both water-based and solvent-based cleaners are available for cleaning the surface of natural stone. But, the hardness and absorbency of the natural stone will determine which type of cleaner should be used to clean natural stone. Choose your natural stone surface cleaner carefully, and be sure to test an inconspicuous area first before you roll up your sleeves to tackle the entire job of cleaning the surface of natural stone.
Is this the whole article? Where’s the helpful info? What a letdown. As with most of these moneypit articles.
I clicked on this article with great anticipation because that was exactly my question yesterday at Home Depot and Floor and Decor. But Tom’s article on this subject was a BIG WASTE OF TIME. No information was conveyed in the article. I don’t know anymore than I did when I clicked.