General Knowledge · 1
What is the hardest natural substance on Earth?
Answer
Diamond
Diamond is the hardest natural substance on Earth, rated 10 on the Mohs hardness scale (the highest possible rating). Diamonds are formed from carbon atoms arranged in an extremely dense, ordered crystal lattice structure under extreme pressure deep within Earth's mantle. This exceptional hardness makes diamonds invaluable for cutting tools, drills, and of course, jewelry.
💡 Did you know?
Diamonds are so hard that only another diamond can scratch a diamond; despite their hardness, diamonds are still brittle and can shatter with a precise blow.
Other options people guess
- Granite
- Steel
- Platinum
Topics
- geology
- minerals
- science
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