Lab Alchemy Won't Shake Gold Prices: Why Synthetic Gold Won't Repeat Diamond's Collapse

"Any sufficiently advanced technology is indistinguishable from magic." — Arthur C. Clarke

For over a millennium, alchemists have toiled in laboratories trying to turn base metals into gold. CERN has achieved this, albeit on a minuscule scale, but a San Francisco startup claims to have surpassed that feat.

According to Euronews, Marathon Fusion, backed by Bill Gates' Breakthrough Energy, the U.S. Department of Energy's ARPA-E, and Anglo American, says it "has turned mercury into real, stable gold, with yields 10 times higher than CERN's record."

This claim has yet to be verified. Still, it has sparked heated debate, especially among Bitcoin proponents who argue that lab-made gold could impact gold the way synthetic gems hit diamonds.

The method involves bombarding mercury-198-rich material with fusion neutrons to create unstable mercury-197. This isotope decays into stable gold-197 within about 64 hours. Marathon's goal isn't to flood the market with gold but to monetize its neutrons by selling medical isotopes and gold to help pay for costly fusion power plants.

The Limits of the Diamond Analogy

"It's another 'gold asteroid' story," said Lobo Tiggre, CEO of Independent Speculator, in an interview with Michelle Makori.

"It's a complete non-issue for today's investors," he said, noting that gold's recent pullback reflects concerns over Fed rate hikes and Middle East conflicts.

According to analyst Paul Zimnisky, lab-grown diamond wholesale prices fell 90% to 96% after factories learned to cultivate identical diamonds within weeks. De Beers shut down its Lightbox brand in 2025 with a $511 million loss, and Anglo American is in talks to sell its 85% stake. Diamonds are arguably the only commodity currently out of favor.

Tiggre dismissed the notion that buyers would pay a premium for "natural" gold. "It's a metal. It's an element," he said, noting that younger buyers have embraced ethically sourced lab-grown gems.

If gold became "as accessible as aluminum," he said, "I'd sell."

That said, gold has defensive qualities diamonds lack. Tiggre noted that of the 222,600 tons of gold ever mined, roughly 97% sits in vaults and jewelry, while the annual 3,672-ton mine supply has no impact on gold's dollar price.

Raw materials are another barrier. Natural mercury contains only 10% mercury-198, which must be concentrated to about 90%. Karl Lackner, professor emeritus at the Max Planck Institute for Plasma Physics, called this process highly technically demanding.

Makori noted that concentrating mercury-198 costs about $15,000 per milligram, while gold trades at roughly $135 per gram.

Based on Lackner's estimates, converting stored mercury waste would yield only 20 tons of gold annually, impacting prices by less than 1%. Transmuting all of the Earth's crust mercury would cap annual output at nearly 600 tons.

Extraordinary Claims Require Extraordinary Evidence

Tiggre, citing his physics background at Rensselaer Polytechnic Institute, compared Marathon's non-peer-reviewed paper and its two-minute video to an "unreliable" junior exploration company touting pathfinder elements without assay results. He added that the company hasn't even stated whether it produced any gold.

"You need extraordinary evidence," he said. "And what we got is a YouTube video."

Scaling from a 1-kilowatt test bed to a gigawatt-scale plant that doesn't yet exist could take decades. Makori pointed out that the gold could remain radioactive for 14 to 18 years before being legally sold.

"Filtering gold from seawater would be far easier," Tiggre added, noting that investors "can see this coming from a mile away."