1.    Diamond means invincible

The word diamond is derived from Ancient Greek. The word ἀδάμας (adámas) means invincible, untamed, hard substance obviously referring to the hardness of the material.

2.    Diamonds are several million years old?

While we like polished diamonds for their pristine beauty and radiance, they are all but new. Diamonds are thought to have formed several million years ago. The youngest diamonds that are found have been estimated to be about 990 million years old through carbon dating, however there are also claims that diamonds might be less than a million years old through radiocarbon dating.

3.    Physical properties of diamonds  

Most diamonds aren’t used for their beauty, but more likely for their hardness. Diamonds are the hardest natural substance on the face of the earth, which makes them a perfect material for industrial uses such as drills and saws. They won’t melt either, but at a temperature of 763 degrees Celsius they will simply vanish without even leaving a pile of ash.

4.    The largest diamond ever found

The Cullinan diamond is the largest diamond ever found or to be more precise the largest rough diamond of gem-quality ever found. It was cut in several smaller diamonds of which the Great Star of Africa weighing 530.4 carats is the largest. It is now part of the British Crown Jewels on the Scepter with the Cross.