Cleopatra was one of four female alchemists who worked on producing the famous Philosopher’s stone. She lived during the last remarkable period in Alexandria’s history, when it was still a city of open-minded scientists. Some of the most precious of her discoveries are included in her Chrysopoeia, which may even hold the key for a transmutation into gold.

Source: The Forgotten Cleopatra: Searching for Cleopatra the Alchemist and Her Golden Secret | Ancient Origins