What is Philosopher's Stone?
[[Image:JosephWright-Alchemist.jpg|thumb|300px|''The Alchymist, In Search of the Philosophers' Stone'' by [[Joseph Wright of Derby]], 1771.]] The '''Philosopher's Stone''' is a substance that [[Alchemy|alchemists]] believed was able to turn base (impure) [[metals]] (such as [[lead]]) into pure [[gold]]. They thought it could also be used for rejuvenation (to become younger again) and to achieve [[immortality]] (to live forever). ==In popular culture== The first ''[[Harry Potter]]'' book is called ''[[Harry Potter and the Philosopher's Stone]]'' (''Harry Potter and the Sorcerer's Stone'' in the United States). The [[manga]] and [[anime]] series [[Fullmetal Alchemist]]. {{multistub|science|religion}} [[Category:Alchemy]]