Engineered quartz is a manmade product created mostly from natural materials. It’s made of 90 to 94 percent ground quartz and 6 to 10 percent resins and pigments that are combined into durable and nonporous slabs. Engineered quartz is hard, dense, nonporous, nonabrasive, and nonreactive to acids—attributes that make it perfect for use as countertops, backsplashes, walls, and even floors.