Stone vanity tops add an unmistakable sense of luxury to your bathroom. Resistance to water is a major consideration when it comes to choosing a bathroom countertop material. Quartz, quartzite and porcelain countertops are top-notch in this regard. With regular sealing, granite and marble countertops are elegant choices for the bathroom. Onyx countertops make beautiful vanity tops as well. Although they need a lot of upkeep, their look is breathtaking when backlit with soft lights.