Philosopher's stone v. sorcerer's stone

[Catlady (Rita Prince Winston)]

--- In HPFGU-Movie at y..., "John Hancock" <seeker at h...> wrote:

> It has also gone by other name including Sword in the Stone, Magnum
> Opus,

I thought Sword in the Stone was a reference to smelting iron ore to 
make the steel to make the sword!