Did you know that a diamond is the hardest natural substance on earth? A diamond is so hard that cocorundum, the second hardest mineral on earth that forms rubies and sapphires, is 58x less hard than the diamond. How about that for a competitor!

Here’s an interesting fact though: Despite the diamond’s extreme hardness, if a diamond is placed in an oven at the hot temperature of 763 degrees Celsius (1405 Fahrenheit), the diamond will simply vanish without even ashes remaining.