You can buy them in Celadon City.
There is a big market.
You can buy them on the second or third floor where there is only one clerk.
He sells every stone, except moon and sun stones.
20 or 21. Not sure cause mine leveled up twice in a trainer battle
so if you want to elvolve pichu then you have to get its happyness up and to check it you go to the house in golden rod city but anyways once ots happyness is up then you can elvolve it with a thunderstone.
Answer:Here's A Secret: thery're a secret(; You could use the itemfinder where you find zapdos and get a thunderstone. also you find mewtwo in cerulean cave.
Celadon city
After pewter City You can f
A thunderstone
You can buy it at the celadon pokemart mall.
Evolve Eevee by exposition of a Thunderstone.
On FireRed (and LeafGreen, Blue and Yellow) you can BUY thunderstones, firestones, leafstones and waterstones at the department store in Celadon city. It's really easy.
Yes, it's the only way to get a Raichu in any pokemon game
Evolve the Eevee you get given at the top (using the back entrance) of the Pokemon 'Mansion' in Celadon using a Thunderstone.
The Pokémon that evolve via the Thunderstone are Pikachu which evolves into Raichu and Eevee which evolves into Jolteon.
I think you can only get it by using a thunderstone on an eevee. You get the eevee from Bill in Cerulean City.
With a water fire or thunderstone for sure. Possibly with freindship during the day or freindship during the night.
Pikachu+Thunderstone=Raichu Eevee+Thunderstone=Jolteon These are the only 2 pokemon that evolve with the thunderstone in pokemon emerald
You can actually purchase thunderstones on the 4th floor of the Celadon City Dept Store you can buy as many as you want.
You need surf, you'll find on at New Mauville (the route is under the cycle bridge to the east) There'll be a thunder stone in the complex. You can also collect Yellow Shards from using Dive in the Ocean and trade them for a Thunderstone. Otherwise you can simply trade with FireRed/LeafGreen with a Pokemon holding a Thunderstone.