Marathon Fusion, a small fusion energy company in San Francisco, announced on Wednesday that it had transmuted, or converted, mercury into stable gold last month, beating a record set by CERN tenfold. The Geneva-based organisation runs the world's largest particle physics laboratory.
The claim, which has not been independently verified, revives an alchemist's dream and a market fear that lab-made gold could do to bullion what lab-grown precious stones did to diamonds.