What's the rarest material on Earth?

Posted:: 3+ months ago by Mythbuster
Topics:: gold, earth, diamond, material, rare, question, diamonds

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I've heard of some rare materials like gold, and diamond but the question is,
what's the rarest material on Earth?

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Jewels Vern

Unobtainium.

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27free

Antimatter – $62.5 trillion per gram (estimated by NASA) The first positron ever observed.

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