You can buy them at the celadon city dept store.
you have to ivolve a pikachu with a thunder/lighting stone. you have to ivolve a pikachu with a thunder/lighting stone.
you use a fruckin thunder stone
You need to give it a thunder stone
The sun stone is an item similar to the thunder stone, water stone, fire stone and leaf stone it evolves two pokemon: Gloom and Sunkern.
you can get the leaf stone, fire stone, and thunder stone at the big department store in celadon city. you get eevee in the back on the Pokemon mansion.
evee can evole into three things in firered and leafgreen. it can evolve into flareon if you use the fire stone, jolteon if you use the thunder stone, or vaporeon if you use the water stone.
The Pokémon that evolve via the Thunderstone are Pikachu which evolves into Raichu and Eevee which evolves into Jolteon.
the Pokemon that evolve with the help of a thunder stone are : pikachu +thunder stone = raichu, or eevee + thunder stone = jolteon.
Pikachu evolves into a Raichu by use of a Thunder Stone, the thunder Stone can be found in the Power Plant (requires Surf) and in the Celadon Department store for around 2000 Pokedollars.
the thunder gym in in vermillion city
spoon!
Eevee can only evolve into Vaporeon with the use of a Water Stone, Jolteon with the use of a Thunder Stone or Flareon with the use of a Fire Stone in Pokémon FireRed and LeafGreen, it cannot evolve into Espeon or Umbreon because there are no day or night functions in FireRed or LeafGreen.