All surface finishes, whether they be timber, stainless steel or stone will range in costs. Regardless of its finish or shine, marble creates an immediate impression of elegance. Today, the presence of marble or other stone anywhere in a residential or commercial property is a plus on the real estate agents checklist. A marble foyer or bathroom makes a tangible contribution to the value of one's property.

Keeping your stone free of dust and sand will minimize any scratches and wear-patterns that can develop from everyday use of some natural stone, such as marble and limestone. Sweep or dust all natural stone surfaces regularly to remove loose soil and dust. Clean your natural stone on a regular basis with warm water and a clean, non-abrasive cloth, sponge or mop. 

Does the sealer change the surface or look of the stone?

A sealer such is a penetrating impregnator, meaning the sealer is absorbed by the stone and sits below the surface of the stone. It therefore does not effect the surface, unlike lacquer treatment. 

Natural stone has been formed over millions of years but improper care can ruin nature's beauty. Although we usually think of stones as a hard material, it is a porous material that can absorb spills and stains if untreated. Sealing your stone with a quality impregnating sealer, will minimize the chance most spills from damaging your investment. However note that sealers are not a permanent means to preventing potential stains.