Rumour has it they were pulling teeth from the dead and the living. Birkenau crematoria became goldfields. Fillings, melted down, were reverted into bullion to fund the Third Reich. So, when Copenhagen chemist George de Hevesy was entrusted with the medal, he used reverse alchemy to keep it hidden. The solution: aqua regia, a mixture of hydrochloric acid and nitric acid that dissolves gold. George placed the amber beaker on the shelf. Gold yields no interest when it is invisible. When the war was over, he recast the liquid precipitate, and returned the Nobel Prize medal to the Jewish scientist.