I.
One of the problems I have with analytical psychology is that it posits symbols everywhere.
Thus, for example, Jung insists that the alchemists were not literally attempting to turn lead into gold; that chrysopoeia is simply an ancient Greek term for individuation and has nothing to do with the transmutation of base metals.
In other words, the alchemists were metaphorically describing a process of self-realisation and their obscure and seemingly nonsensical texts contained universal truths which, once you understood how to interpret them, anticipated and reinforced his own theories [1].
Thus lead, don'tcha know, symbolises the unconscious, that shadowy place of repressed emotions, unresolved conflicts, and unacknowledged forces; whilst gold, on the other hand, symbolises the fully integrated (and fully conscious) self.
II.
There's nothing wrong with viewing alchemy as a magical art or esoteric philosophy if that makes happy. But, personally, I prefer to think of it as an early form of science, associated with chemistry and metallurgy.
And so I'm pleased to report that our friends at CERN have demonstrated (on several occasions) that you can, in fact, turn actual lead into actual gold - though the great work requires a particle accelerator rather than a simple melting-pot or crucible.
In 2002 and 2004, scientists using the Super Proton Synchrotron reported producing a minuscule amount of gold nuclei from lead nuclei, by inducing photon emissions within deliberate near-miss collisions of the latter.
And, earlier this year, another experimental team at CERN announced that they had used the Large Hadron Collider to replicate the 2002 SPS experiments at higher energies and created a total of roughly 260 billion gold nuclei over three runs (that might sound a lot, but, again, it's a tiny, tiny amount of material; think trillionths of a gram). [2].
III.
So, how's it done?
Well, since the crucial difference between an atom of lead and an atom of gold is that the former contains three more protons [3], all you have to do is subtract these with an artificially produced electric field and Bob's your uncle, you have accomplished something that medieval alchemists could only dream of and followers of Jung only conceive in relation (yawn) to the psyche.
Of course, that's not so easy; as I indicate above, you're going to need access to some serious technology if you wish to fire lead atoms towards each other at extremely high speeds. But it is doable - and that's pretty amazing, I think (even if not something that the scientists at CERN particularly welcome) [4].
Notes
[1] Jung readily admits that he initially regarded alchemical texts to be nonsensical and impossible to understand. However, curious, he pressed on and eventually discovered passages that he thought significant and which seemed to correlate with findings in his own work: 'I realised that the alchemists were talking in symbols ... [and that] only after we have learned how to interpret them can we recognise what treasures they hide'.
See C. G. Jung, Memories, Dreams, Reflections, recorded and ed. by Aniela Jaffe (Vintage Books, 1965), p. 204.
[2] Despite its very high density, the gold nucleus is incredibly small, with a diameter of approximately 3
x 10⁻¹⁴ metres. This is about 10,000 times smaller than the diameter of
a gold atom itself. So even 260 billion gold nuclei don't amount to much and cannot be directly observed.
Gold is defined as a distinct element on the basis of its nucleus consisting of 79 protons. The neutrons meanwhile - which vary in number depending on what isotopic variety of gold one is dealing with - determine the stability and mass of the nucleus.
[3] For those, like me, who need a reminder ... A proton is a subatomic particle with a positive electrical charge. They are found in every atomic nucleus of every element.
[4] Equally amazing is the fact that if you only subtract one proton from an atom of lead you'll produce thallium - a rare, naturally occurring silvery-white soft metal known for its toxicity - whilst if you subtract two protons, you'll end up with mercury.
The reason why scientists don't particularly welcome this unintentional alchemy is explained by Ulrik Egede, a professor of physics at Monash University:
"Once a lead nucleus has transformed by losing protons, it is no longer
on the perfect orbit that keeps it circulating inside the vacuum beam
pipe of the Large Hadron Collider. In a matter of microseconds it will
collide with the walls. This effect makes the beam less intense over time. So for scientists,
the production of gold at the collider is in fact more of a nuisance
than a blessing."
See Ulrik Egede, 'Physicists at the Large Hadron Collider turned lead into gold - by accident', The Conversation (13 May 2025): click here.