Alexandrita Stock 3 will add charm to any room in your home, but it is most popular in kitchens and bathrooms. 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, Alexandrita Stock 3 will also add splendor and value.