Currently, diamond is regarded to be one of the hardest and most scratch-resistant natural materials in the world. Most diamonds found in na
How Are Diamonds Formed? Scientists Solve Long-Standing Geological Puzzle of the Precious Rock's Formation
Lonsdaleite - Wikipedia
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This is what a Diamond still encased in Kimberlite looks like. : r/geology
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Does anything sparkle more than a diamond? - Quora
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New Substance Is Harder Than Diamond, Scientists Say - The New York Times
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