This is the cube you're looking for Surprisingly heavy. Great conversation piece. Aerospace grade tungsten alloy cube. A perfect complement to the 1.5" Aluminum Cube! Check it out Edges are rounded for safe handling Base included. Includes certificate of chemical composition and interesting tungsten facts. Machined from aerospace grade tungsten, this 1.5" tungsten alloy cube is an excellent contemporary addition for your desk at work or side table at home. Surprise your colleagues and friends with the cube's density, weighing 1.0 kilogram, yet fitting into the palm of your hand. Fully non-toxic! Tungsten is one of the densest naturally occurring elements, and now you can add one of nature's wonders to your own collection. A unique executive gift or event gift. If you like the cube, don't forget to check out our Tungsten Sphere.