NIGHT AND DAY STONE RESTORATION - Marble Floor Polishing, Granite Countertop Sealing, and Natural Stone Restoration. Grinding is the process by which the surface is sanded by the use of abrasives (diamond discs) to remove large stocks of the stone. This process is usually recommended when stone tiles contain lippage (uneven tiles). It is also recommended when deep stains and scratches occur or when one desires a completely floor. https://nightanddaystone.tumblr.com/ https://local.google.com/place?id=17583826546741757848&use=posts&lpsid=2180510428166709209