There's one in New Mauville. You can also trade a Yellow Shard for one from a person on Route 124.
Thunderstone can be used to evolve a Pikachu into a Raichu.
Pikachu+Thunderstone=Raichu Eevee+Thunderstone=Jolteon These are the only 2 pokemon that evolve with the thunderstone in pokemon emerald
it evolves curtain thunder Pokemon
The thunderstone has an effect on three Pokemon:Evolves Pikachu into RaichuEvolves Eevee into JolteonEvolves Eelekrik into Eelektross
if you have a pikachu,put a thunderstone on it and it will evolve into raichu
Pikachu and eevee are a couple.
In Generation III (Ruby, Sapphire, Emerald, Fire Red, Leaf Green), the only Pokemon that evolve with a Thunderstone are: Eevee, which evolves into Jolteon; and Pikachu, which evolves into Raichu.
It dosent evolve at a level.You need a thunderstone to get it in to a riachu.
You can trade them for evolution stones eg. yellow shard = thunderstone
The only way you can get a Thunderstone in Pokemon Ruby is by finding a Yellow Shard and trading it for a Thunderstone in the Hunter's houe, just off Mosdeep city. These shards are found when searching the ocean floor with a Pokemon who knows Dive. Of course, you can get a friend to attach a Thunderstone to one of their Pokemon on FireRed or LeafGreen and trade it to your Ruby version.Another solutionThere is also a thunderstone in the basement you just have to fing it. Mauville. He will give you the BASEMENT KEY. Surf off to the right of route 110. Go in the cave and you'll enter the basement. At the end of the basement theres a pokeball. Inside is a thunderstone.
give the shard hunter a yellow shard found under water near mossdeepcity and sootoplis
You can get a Thunderstone in New Mauville and by trading a Yellow Shard to the Diving Treasure Hunter on Route 124.