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 .
In Diamond, you can obtain a Water Stone in the underground in Sunyshore City.
Go dig underground and with luck a Water Stone appears
A diamond sinks in water. There is only one stone that floats, pumice.
go underground and keep digging till u find a water stone or a fire stone
Thunder stone =Jolteon Water stone = Vaporeon.Fire stone = Flareon.
what do you mean
to evolve certain Pokemon
evee
Diamonds do not float.
A Water Stone evolves a Poliwhirl, Shellder, Staryu, Eevee, and Lombre.
Did underground and maybe you'll get lucky!
you can find one while mining