Encyclopedia of Fantasy (1997)
Philosophers' Stone

In Alchemy, a sought-after substance enabling Transmutation of base metals into gold – or, metaphorically, base Souls into enlightened ones. It features in the Pandora's Box chemistry sets of Diana Wynne Jones's The Ogre Downstairs (1974). Colin Wilson's The Philosopher's Stone (1969) uses the term in its metaphorical sense. [DRL]

This entry is taken from the Encyclopedia of Fantasy (1997) edited by John Clute and John Grant. It is provided as a reference and resource for users of the SF Encyclopedia, but apart from possible small corrections has not been updated.