Diamond Facts

• The largest Diamond ever found:
  Cullinan at 3,106 carats.
• What is the hardest natural substance on Earth?
  The Diamond.
• 80% of the world's diamonds are not suitable for Jewelry.
• Is a Diamond Indestructible?
  No. The fact that Diamonds are a hard substance refers to their ability to withstand scratching. But that is different than toughness, which refers to the ability to withstand breaking or cleavage.
• How old are most diamonds which are found in nature?
  1 billion to 3 billion years, by most accounts.
• How do diamonds reach us?
  They are formed deep within the Earth's crust, and come to the surface via Volcanoes. Most diamonds are found in Kimberlite, which is volcanic rock.

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