Granites differ in their texture, but they all have similar properties such as their resistance to the invasive action of most substances found in the house. Unlike marble and limestone, granite is the least affected by acids or alcohol. It shouldn’t be damaged from standing hot utensils on it or by sharp knives.
All stones, due to their granular construction, are porous to a greater or lesser extent and most granites fall into the latter category. To reduce the slight ability of granite to absorb liquids, we treat the surface with a proprietary sealer that penetrates the surface and fills the microscopic voids between the crystals. This process is first done in the factory at the completion of fabrication. However, you should be aware that with the lighter-colored granites you may experience slight darkening of the stone in areas where water has been allowed to stand, but this should fade away as it dries out. Beetroot, wine and cooking oil, particularly when hot, may cause a stain on your marble or granite countertop, and you should always clean this up immediately.
Marble, limestone, and travertine are susceptible to the aggressive action of acids and alcohol. This is called “etching.” Care should be taken to remove spills such as orange juice, coffee, vinegar, wine, tomato products, mustard, urine, and many soft drinks since this will “etch” most marble, limestone, and travertine. Sealing allows you time to wipe up a spill, but it cannot stop the chemical reaction that may leave a dull mark. General household cleaners not specifically designed for natural stone are not recommended. These may etch away the polish, discolor the surface, scratch the stone or degrade the sealer. Professional refinishing is the best way to permanently remove etch marks and restore your natural stone’s even finish.