theres no such thing
the east of hearthome
mount coronet is in the sinnoh region. that's Pokemon diamond pearl and platinum.
you see him at spear pillar where you catch palkia and dialga or arceus
Mt. Coronet (middle) peak
You buy a gameshark ad cheat through it.
same place as in Pokemon D/P, west from celestic, east from eterna, and south-east from snowpoint.
You don't get the magna stone from buck in Pokemon platinum.
It does not evolve with a dusk stone in Pokemon Platinum
there is no bronze stone
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.
a grass Pokemon
eevee