An object that is gold in one specific area but becomes worthless if you leave that area?

Let us pretend there is some "sacred city" created by gods, where gold is so common that it is the standard form of currency and everyone has lots of it. But once you try to leave the city with this gold and move somewhere poorer, the gold will turn to dull rocks or dust.

The ideas I've had so far is that perhaps the gold is more a pseudo-gold, and is actually a reaction to some sort of electrical or magnetic field from a crystal within or around the city. Perhaps radiation of some kind. But surely this would also have other side-benefits like radiation poisoning?

Are there any other rational explanations as to how this could work? I'm looking for mostly-scientific answers and not just "it's magic" sort of answers.

posted over 5 years ago

Horkrine‭

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