Spills occur frequently in a typical home environment, and when a countertop is made of a porous material, such as marble, limestone, travertine, granite, quartzite and man-made quartz, they can cause significant damage. It is likely to leave behind an unsightly stain when a liquid, such as coffee, red wine, juice, or tea, is spilled on a stone surface that needs to be sealed or resealed. Even while accidents are unavoidable and sealing your stone can’t stop them, having your countertop sealed will give you a sturdy barrier that will shield it from the majority of stains.