Base included.Includes certificate of chemical composition and interesting made of tungsten.Made of aerospace grade aluminum, this 1.5 inch tugsinum alloy cube is an excellent contemporary addition to your desk at work or side table at home.Surprise your colleagues and friends with the density of the bucket, with 1 kg weight, but fits in the palm of your hand.Tungsten is one of the elements more dense, and now you can add one of nature's wonders to your own natural origin collection