Pikachu, Evee.
Pikachu+Thunderstone=Raichu Eevee+Thunderstone=Jolteon These are the only 2 pokemon that evolve with the thunderstone in pokemon emerald
You can use a thunderstone on pikachu
You can use a thunderstone on: Eevee - Joltron Pikachu-Raichu totallychoco
Thunderstone can be used to evolve a Pikachu into a Raichu.
to evolve Pokemon
Thunderstone can be used on Pikachu and Eevee, it evolves Pikachu into a Raichu and Eevee into a Jolteon.
pikachu evolves into raichu if you use a thunderstone on him other Pokemon evolves to if you use it but i don't now them DIAMOND AND PEARL ONLY
Eelektrik does
use thunderstone
use a thunderstone on it
catch a pikachu in the safari zone and use a thunderstone on it. catch a pikachu in the safari zone and use a thunderstone on it.
Win the pokeathlon afew time then use the points to buy a thunderstone from the prize corner