You can earn points by playing in the PokeAthlon and with those points you can buy prizes. One of the prizes might be a Thunder Stone. The prizes change everyday.
you can buy one at the celadon department store
Johto: National Park- come 1st in bug catching contest
Route 38- Trainer rematch
Pokeathlon Dome
Kanto: Route 25- show Bill's grandfather a pichu
the code do be for gold shiny thunder stone cheat am 9001
an evoloution stone is a special stone that evolves some Pokemon. EG: eevee: use a water stone on it to evolve it into a vaporeon fire stone on it for a flareon thunder stone for a jolteon there are lots of Pokemon an evoloution stone can evolve types of stone: fire stone water stone thunder stone dusk stone leaf stone shiny stone dawn stone sun stone moon stone
Trade from Pokemon Diamond, Pearl, or Platinum Version.
Thunder Stones can be purchased at the Celadon City Dept Store on the 4th Floor.
An oval stone enables certain Pokemon to evolve. The only one I know of is Happiny.
with a thunder stone
If you go to the Pokéthlon on Thursday and Saturday you can purchase a Thunder Stone for 2500p(Pokéthlon Points). From a Woman inside the Pokéthlon Building.
The easiest way to get a thunder stone is to earn 2500 points at the place by the national park the thunder stone will not be there everyday because everyday there's a different stoneYou could show a Pichu to Bill's Grandfather on Route 25, or you can buy it on Thursdays in the Pokeathlon Dome for 2500 points.
Bring a Pichu to Bill's Grandfather in Cerulea City where Bill lived in Pokemon Red & Blue.
the Pokemon that evolve with the help of a thunder stone are : pikachu +thunder stone = raichu, or eevee + thunder stone = jolteon.
you use it on some water type Pokemon to evolve them. example:pikachu+thunder stone example:polywhirl+water stone example:evee+fire stone example:Roselia+sun Stone example:murkrow+dusk stone a ever stone prevents your Pokemon from evolving
You can get the thunder stone by going underground and digging for it in Pokemon diamond/pearl ( the thunder stone , fire stone, water stone, and the leaf stone is very rare, so good luck!).
You can find the thunder stone in New Mauville
you can find a thunder stone by checking the UNDERGROUND
Pickachu and eeve can evolve with the thunder stone
You can't, it needs a Thunder Stone.
No, Mareep cannot evolve with the use of a Thunder Stone.