For many years, there are a number of people who believed that diamonds are made coal that probably became quite popular because of the countless Superman comic books, TV shows and movies where the famous superhero turned clumps coal to a shiny, sparkling diamonds by simply crushing it with the palms of this hand. Aside from this "popular" myth you may also have heard or read different stories or theories where diamonds really came from. But for today, let's go through some facts and check out everything that we know about diamonds.

Although the myth presented in Superman comic books is not really true, there is still a tiny portion of that story that still present a fact behind the formation of diamonds and that is coal plays a very subtle role in the creation of the said gems. If we look at the history behind each diamond that has ever been produced, we can most definitely say that most of the diamonds that have been dated to be much older that the our lovely planet's first plants are formed from coal.

Aside from the diamond found on the Earth's surface, do you know that NASA researchers have also detected a huge number of nanodiamonds in some meteorites from space. The finding became evident when Smithsonian researchers found tiny diamonds from the sample that they took from the Allen Hills meteorite.

The diamonds that we know today are formed at the depth of 90 miles or 150 km (estimate) over millions and millions of years ago and in temperatures ranging to 2,000° F. The stones then reach our surface when magma from far below the Earth's surface comes up through volcanic eruptions. From the magma, a rock called kimberlite is formed that indicates that there are diamonds that can be found within that area.

When a diamond is pure, it has the ability to transmit visible light and appear as a clear and colorless crystal but not every diamond in the world are pure as there are also coloured diamonds. The colours in diamonds are can be attributed to the crystals lattice defects and impurities. Although the crystal lattice of a diamond is strong, there are still some atoms that can be introduced to it such as atoms from nitrogen, boron and hydrogen, among these atoms Nitrogen has been the most common impurity found in diamonds that also produce yellow and brown colour in diamonds.

While many people still prefer pure diamonds, there is also a growing number of customer in the market as well as jewellery artisans such as Benny Gems who sees the potential of coloured diamonds. Today, even the rarity of the coloured are ranked and some of them are graded using a different grading scale.