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Solid Iron Polished Density Cube 10mm - 7.93g

Elemental metallic 1 cm elemental cubes

These highly polished cubes are great educational tools


Each Iron cube is solid and of high purity of 99.99%, highly polished by hand for many hours to reach a mirror finish, and laser engraved with its periodic info. This is an heirloom piece that will last forever.

Iron is a chemical element with the symbol Fe and atomic number 26. Here are some interesting facts:

  • It was discovered before 5000 BC.
  • The body of an adult human contains about 4 grams (0.005% body weight) of iron, mostly in hemoglobin and myoglobin.
  • Iron deficiency is the most common nutritional deficiency in the world.
  • The fraction of iron that is in Earth's crust only amounts to about 5% of the overall mass of the crust and is thus only the fourth most abundant element in that layer (after oxygen, silicon, and aluminum).
  • Iron meteorites are the main form of natural metallic iron on the Earth's surface.
  • Cast iron was first produced in China during the 5th century BC, but rare in Europe until the medieval period.
  • Since pure iron is quite soft, it is most commonly combined with alloying elements to make steel.


  • Size: 10x10x10mm
  • Weight: 7.86g 
  • Sample Purity: 99.99%
  • Surface: Mirror Finish

Polar Metals seeks to spice up your life with interesting and unusual metals in unexpected ways. The elements on the periodic table are everywhere, in fact, they make up everything! So far, we have brought 29 Elements to you: Silver, Silicon, Germanium, Nickel, Chromium, Zinc, Niobium, Tantalum, Hafnium, Rhenium, Thulium, Lutetium, Scandium, Ruthenium, Platinum, Palladium, Gold, Iridium, Osmium, Titanium, Cobalt, Magnesium, Zirconium, Molybdenum, Copper, Aluminum, Carbon, Iron and Tungsten.

*Note: Please wear gloves when handling.

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