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The hardest substance that is naturally occurring is a diamond. However, there are harder substances that have been made by scientists in labs.

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9y ago
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9y ago

The third hardest rock on Earth is corundum, also known as sapphire. The hardest rock on earth is the diamond.

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12y ago

the hardest rock is diamond

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15y ago

Diamond is the hardest mineral.

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Q: What is the second hardest natural substance on earth?
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Related questions

Which natural-substance on earth is the hardest?

A diamond


Which natural substance on earth is the hardest?

Diamonds.


Which is the second hardest substance after diamond on earth?

Its Tungsten


What is the hardest natural substance on earth made of carbon?

diamond


Are Diamonds are the hardest substance on Earth?

It is the hardest NATURAL substance- due to the arrangement of the carbon atoms that make up a diamond. (Thee ARE harder materials, but they are manmade.)


What are some unique features of a diamond?

It is made entirely of carbon and it is the hardest natural substance on Earth.


Which nature-substance is the hardest?

Diamond. a very hard material that is the hardest substance ever, or at least discover to be the hardest substance on EARTH THAT IS


Is it fact or opinion that diamonds are the hardest substance on earth?

This is a fact. It can be verified by way of experimentation, and is true regardless of what anyone believes or disbelieves.


Other than diamond hardest naturally occurring substance?

On earth, diamond is the hardest naturally occurring substance.


Is graphene is hardest thing in the world?

No,diamond is the hardest known substance on Earth.


Is diamond hardest substance available on earth?

Yes, it is.


What is the hardest substance on the earth that is non metal?

diamond