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This Is How Diamonds Are Made - Documentary
Diamonds are made out of carbon — highly organized carbon, that is. Geologists are still guessing how diamonds formed in the Earth from 1 billion to 3 billion years ago, according to a recent study in the journal Nature, but they think the recipe follows something like this:
1. Bury carbon dioxide 100 miles into Earth.
2. Heat to about 2,200 degrees Fahrenheit.
3. Squeeze under pressure of 725,000 pounds per square inch.
