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We do not produce elements. They are fundamental products of the creation of the universe. We could artificially produce it from other events.
Gold is an element. An element is define by the number of protons in the center of the nucleus.
To “create” an element we would need to start with some other element and either add or remove protons from the nucleus.
The process of adding protons is called fusion. That is how fusion reactors work. We have done this with isotopes of simple light elements hydrogen is one.
The amounts of energy and technology involved are substantial and not risk free. There is no economic model that makes production of gold desirable. So we don’t bother.
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