You can find all the stones while digging in the underground, or you find them in the Solaceon (Unown) Ruins. There are several empty rooms in the ruins with single rocks in them. Use your item finder on your Poketech and you'll find a Thunderstone, Firestone, and a Waterstone. Hope this helps!
You can find it somewhere or you can go underground and dig it up.
You cannot get a waterstone from Diamond . You can trade one into your game card from a previous version of pokemon , or meet someone in the underground maze that has one . You can find a waterstone in the underground maze in Pearl . Though there is a 2% chance that a stone from Pearl can be found in Diamond .
Exchange Blue Shard with the Waterstone. You'll find waterstone in Abandoned Ship, too.
u can go under groung with the explorer kit and dig at the walls eventully find a water stone
You can get one in Solaceon Ruins with the dowsing machine app on the poketech.
Dig it out in the underground.
You can buy it at the Cleadon department store
in the underground tunnels.
Yes, you can dig up a waterstone in Pokemon platinum underneath the resort area.
You must evolve the Eevee you get from Celadon City with a Waterstone.
Eevee - Vaporeon, Poliwhirl - Poliwrath, Shelder - Cloyster, Staryu - Starmie, Lombre - Ludicolo, Panpour - Simipour.
For which game? Pokemon Red Pokemon Blue Pokemon Yellow Pokemon Gold Pokemon Silver Pokemon Crystal Pokemon Sapphire Pokemon Ruby Pokemon FireRed Pokemon LeafGreen Pokemon Emerald Pokemon Diamond Pokemon Pearl