The most expensive material on the planet is antimatter worth $62.5 trillion per gram

In terms of production costs, the most expensive substance in the world is antimatter. The cost of creating this material has been estimated at about $1,771 trillion US Dollars (USD) per ounce ($62.5 trillion USD per gram), although some authorities think it may eventually come down to a mere $141.75 billion USD per ounce ($5 billion USD per gram).

This is the cost of antihydrogen, the simplest form of this type of substance, and the antimatter equivalent of the element hydrogen. Other anti-elements would be even more expensive. As of 2013, only small numbers of antihydrogen atoms have been produced — for research purposes only — and the substance is not available for sale.

Why the hefty price tag? In a nutshell, although antiprotons have been detected in cosmic rays, and positrons are emitted by some radioactive elements, there is no known natural source of anti-atoms, so antimatter has to be manufactured.

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