This is a 10mm x 10mm x 10mm cube of almost pure (99.95% pure) Tungsten metal. It features laser etched symbol, name, atomic number and atomic weight in the front of the cube and density (19.25 g/cm^3) and purity in the back.
Tungsten is a chemical element with the symbol W, atomic number 74 and atomic weight of 183.84. It is a lustrous transition metal with a silver color. The most prevelant use of this metal is in heavy metal alloys that are found in cutting tools and wear resistant coatings.
Great for chemistry and physics experiments or as a scientific desk toy.