in the riuns, I think
you can find a thunder stone by checking the UNDERGROUND
use a thunder stone on a pikachu
trade it over from diamond/pearl/platinum
there is no "electric stone" but there is a thunder stone witch can be found under ground
it is impossible to get one. the only way is to get an eevee from bebe in hearthome and use an thunder stone!
stones like water stone thunder stone fire stone i dont know the rest
you can find them under ground or there is one in sunyshore city.
You can mostly find it in miniature poke balls around the field or if you had Pokemon platinum, you can go underground and mine for thunder stones.
You can get a Fire stone,a Water stone and a Thunder stone in one of the rocks.You can also find those in Diamond and Pearl.
You go to Sunyshore city. There will be a PokeBall Somewhere, You open it and there is a thunder stone. That evolves ur Eevee u can get from bebe (harthrome city,house next to poke center) into Jolteon. x]
the Pokemon that evolve with the help of a thunder stone are : pikachu +thunder stone = raichu, or eevee + thunder stone = jolteon.
all you have to do is dig up one using you explores kit or find one in the solaceon cave