Casablanca Stock 3 works very well in kitchens and bathrooms, and can also be cut into beautiful floor tiles or used to pave patios and gardens. Quartzite is a metamorphic rock that originates as sandstone, and usually varies in color from white to gray. It is so strong, that it is often used in construction of walls and floors, and is commonly used as railroad track ballast. Because of its stunning beauty, it is also commonly used as decoration. While maintaining the durability of your home’s surfaces, Casablanca Stock 3 will also add splendor and value.