Then what is this?
https://www.congress.gov/treaty-document/108th-congress/23/document-text
EXTRADITION TREATY BETWEEN THE UNITED STATES OF AMERICA AND THE UNITED
KINGDOM OF GREAT BRITAIN AND NORTHERN IRELAND, AND RELATED EXCHANGES OF
LETTERS, SIGNED AT WASHINGTON ON MARCH 31, 2003
The soil-living, rod-shaped bacterium Cupriavidus metallidurans is famous, biologically speaking, for being able to survive massive doses of toxic metals. Now, new research reveals that special enzymes within the bacteria are responsible for changing toxic versions of gold into inert solid gold, which creates miniature gold nuggets.
"When confronted with ever more gold, some bacterial cells are completely encased with gold," study leader Dietrich Nies, a molecular microbiologist at Martin Luther University in Germany, told Live Science. At most, these gold shells are mere micrometers in size, Nies said, but they can aggregate into sand-grain-size chunks.
https://www.livescience.com/61804-bacteria-poops-gold.html