Other resources

• History of diamonds: From Chaos to Girls' Best Friends
  Diamonds begin in chaos, 75 miles or more beneath Earth's surface, as carbon transformed into crystals by extreme heat and pressure. As volcanic eruptions drive the crystals upward, they can revert to free carbon atoms, or vaporize into carbon dioxide, or become the graphite that's used in lead pencils. But a few stay as diamonds for our pleasure.
  Read more: History of diamonds
• How are diamonds mined
  We seldom think about how the diamonds we wear came to us. Natural diamonds, as opposed to synthetic diamonds or fake diamonds, are mined from the earth. There are currently two methods of mining diamonds: Pipe Mining and Alluvial Mining
  Read more: How are diamonds mined