If you love the lustrous look and practicality of porcelain, you’ll be glad to know that grout is out. The modern porcelain countertops are made, not from tiny squares, but full-size slabs big enough for an island. They come in a wide variety of color, pattern and finish combinations, some unique to porcelain, others that simulate marble, cement, wood, and more. How are these porcelain slabs made, how do they compare to natural stone, and how much do porcelain countertops cost?