Cristal is an excellent crystallization liquid used to maintain polished marble, and granite. Cristal chemically transforms the stone surface similar to the methodology done at the factory. The floor is still allowed to -breathe+ through microscopic channels of the stone. Special Features: Benefits include a harder more wear resistant surface, mirror like reflection, and improved stain resistance. Cristal is for use on polished natural stones such as marble, terrazzo, granite, and agglomerate.