Chrysopoeia
In alchemy, the term chrysopoeia (from Ancient Greek χρυσοποιία (khrusopoiía) 'gold-making') refers to the artificial production of gold, most commonly by the alleged transmutation of base metals such as lead. A related term is argyropoeia (from Ancient Greek ἀργυροποιία (arguropoiía) 'silver-making'), referring to the artificial production of silver, often by transmuting copper.