Where do you find a thunderstone on Pokemon FireRed?

You can't find a Thunderstone in Pokemon FireRed! It's not a wild item that you can collect. You can only obtain it through these methods:

* Trade: You can trade for one from another player who has it.

* Game Corner: You can win it as a prize at the Game Corner in Celadon City by using coins you earn from playing the various games there.

* Mystery Gift: Occasionally, Nintendo may offer a Thunderstone as a Mystery Gift event, but this is rare.

Remember, Thunderstones are used to evolve certain Pokemon, including Pikachu into Raichu, and Eevee into Jolteon. Good luck finding yours!