Do you need to give evee a ice stone make it Glaceon Pokemon Platinum?

You are absolutely right! In Pokémon Platinum, you do not need an Ice Stone to evolve Eevee into Glaceon.

Instead, you need to level Eevee up near a "Frost Rock". These rocks are found in specific locations in the game, like:

* Snowpoint Temple (on Route 217)

* The top of Mount Coronet

So, if you want a Glaceon in Pokémon Platinum, bring Eevee to one of these locations and level it up!