Known as the "king of gems," the diamond is the most precious of gemstones, famed both for its fiery brilliance and for being the hardest mineral on Earth. Its name derives from the Greek word adamas, which means "invincible." Diamonds are a form of carbon,. They occur in a range of colors, the most popular being colorless. 

Hindus believed that a flawed diamond would bring misfortune to it's owner.

The Greeks thought that a diamond could protect its owner from poison.

In the middle ages, those who could afford to buy diamonds believed them to be a safeguard against the black death.