It loses a lot of connotation, too. Philosopher's implies abstract, referring to the stone's elusive, impossible nature: having never been discovered, only theorized.
In a story where everyone is a sorcerer, it dumbs that down a lot. It could be one of their kidney stones for all it matters.
In a story where everyone is a sorcerer, it dumbs that down a lot. It could be one of their kidney stones for all it matters.