you can get many waterstones underground you just go there by the exporer kit
only vapreon
Yes, you can dig up a waterstone in Pokemon platinum underneath the resort area.
Exchange Blue Shard with the Waterstone. You'll find waterstone in Abandoned Ship, too.
Poke'athalon
1. Poliwhirl= Poliwrath 2. Eevee= Vaporeon 3. Staryu= Starmie 4. Lombre= Ludicolo 5. Shellder= Cloyster
I know poliwhirl will evolve to poliwrath and that shelder will evole to cloyster with the waterstone
lombre and staryu.
You can buy one with Athlete Points at the Pokeathlon Store on some days, or you can get a Waterstone from Bill's grandfather after you show him a certain Pokemon.
Dig it out in the underground.
buy it in celdon city
Its evolve to Vaporeon from eevee
You Need A Waterstone.