(credit: Oxford University)

Designer Carbon Materials, an Oxford-based scientific startup, has recently sold its first 200 micrograms of nitrogen atom-based endohedral fullerenes for £22,000—or about £110 million per gram.

This valuation likely makes the material the second most valuable on Earth, preceded only by antimatter, which is estimated by NASA to cost some £41 trillion per gram.

The material, which essentially is a cage of carbon atoms with a nitrogen atom inside, could be used for very small and very accurate atomic clocks, which are currently of the size of a room.

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