there is no bronze stone
You don't get the magna stone from buck in Pokemon platinum.
It does not evolve with a dusk stone in Pokemon Platinum
a grass Pokemon
The Pokemon that can use oval stone in Pokemon platinum is Happiny. It is the pre evolve form of chansey. Mostly every chansy you catch have a oval stone.
eevee
underground
underground
Happiny evolves into Chansey with an Oval Stone.
toolmon obviously
i think eevee
There is a shiny stone at the end of Iron Island.
you can find a thunder stone by checking the UNDERGROUND