Cambria is made of natural quartz, one of the hardest minerals on Earth, for superior durability and performance. Granite is only about 40% to 60% quartz, along with other softer minerals and impurities. With Cambria, you get the look and feel of granite, but receive greater strength and the benefit of it being nonporous and maintenance free. Just wash it with warm water, and use a mild soap if desired. Cambria is stain resistant and never needs sealing or reconditioning. Granite is a porous stone and needs to be sealed regularly with a chemical treatment. It can absorb liquids and food, risking potential staining and bacterial growth within the countertop.