The diamond is generally regarded as the premier gem in the world of precious stones.

Of all the precious stones the diamond has the simplest composition; it is merely crystallized carbon. The most common substance that is known, a substance that is present in every plant, animal and mineral on the earth.

Diamonds come mostly from the mines in South Africa, but are also found in Brazil, India, Australia and even in the United States.

The diamond is the hardest substance known, being #10 on the Mohl scale, despite it