Explosion Blue (#194394) is a versatile stone that can be used both indoors (in kitchens and bathrooms) and outdoors (in paving patios and gardens). Quartzite is a product of sandstone, and is found in various colors that range from gray to white. 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, Explosion Blue (#194394) will also add splendor and value.