I recently came across this post by a startup called Marathon Fusion that claim to have found a scalable method for making gold from mercury.
If this becomes a reality could this crash gold prices? I suppose the good part is that the gold produced by this method is radioactive and takes 17 years to become safe.
Quote from the post
Marathon Fusion has announced a solution to the millennia-old grand challenge of alchemy: the transmutation of gold. Unlike previous attempts, our method is massively scalable, pragmatically achievable, and economically irresistible.