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Diamonds are not the hardest substance on earth. They are the hardest “natural” substance, but man-made synthetics are harder.
98% of all diamonds are not actually white in color.
It takes 1405 degrees of heat to burn a diamond.
The average diamond size for an engagement ring is only .38 carats.
Only diamond can scratch or polish another diamond.
Diamonds have less brilliance, sparkle and fire than a man-made cubic zirconia (CZ) has.
Diamonds do not float in water. That’s why diamonds are often found in river beds.
Some diamonds can actually glow-in-the-dark (known as fluorescence).
The largest diamond in the world is the Cullinan diamond weighing 3,106 carats.
The Hope diamond has been cursed for hundreds of years.
Diamonds ground up into dust have been used to not only poison people, but kill them.
Romans believed that diamonds gave them magical powers.
The brilliant cut (round) diamond is the only cut of diamond that gives you both the maximum amount of brilliance and fire in a diamond. It is also the most popular cut.
Most diamonds mined from the earth are used as industrial diamonds for cutting, grinding and sanding tools.