The only Stone currently in existence belongs to Mr. Nicholas Flamel, the noted alchemist who last year celebrated his 665th birthday.
12 seconds sound clip from the Harry Potter and the Sorcerer's Stone movie soundboard.
You can hear this line at 01:44:46 in the Blu-ray version of the movie.
Quote context
[...]
- Honestly, don't you two read?
- Hagrid.
- Oh, hello, sorry, don't wish to be rude, but I'm in no fit state to entertain today.
- We know about the Philosopher's Stone.
- We think Snape's trying to steal it.
- Snape?
[...]