If you're referring to a stone used on rock pokemon to get them to evolve, there is no such thing.
you can find a thunder stone underground digging them up............i rock w!ll m@l0n#
there is no stone which changes giratina in Pokemon pearl
i am playing Pokemon pearl and their is no such thing as a mind stone. :)
No Pokemon can evolve with a hard stone
You get a chimchar
No; there are no rock-type Pokemon that evolve by stone.
In Pokemon pearl, misdreveaus evolves into mismagius with a dusk stone. In diamond, murkrow evolves into honchkrow with a dusk stone.
Happinny is the only Pokemon that can evolve with the Oval Stone.
There is no such thing as a rock stone.
There is no evolution stone item that allows the evolution of Eevee into Glaceon into Pokémon Pearl however there is a rock that is called the Ice Rock and you can find it in Route 217 which is in the Sinnoh region and is near Snowpoint City.
Roselia
To get a thunder stone, or any type of stone on Pokemon pearl, you need to go underground and look for a bit, I found this the easiest way to get stones.