Hard water builds up around sinks and sink faucets. This can become a hard white build up that actually sits on top of the stone or it can turn the stone hazy and dull looking when it is deep in the pores of the stone. Hard water deposits can cause a haze or cloudiness on the surface of natural stone. Sometimes, if the buildup is not too severe, it can be safely removed using pH-neutral, stone-safe cleaner. If not, we can restore the finish.