i found dialga's stone talked to her grandmother and I went to the stone piller and saw nothing Pokemon platinum
Let's check. You need to have:
>I think I got it. Go into the Celestic Ruins and inspect the drawings at the end of it. commented 1 minute ago by Mew :3 After that, talk to the Grandmother, then check Spear Pillar. commented 2 seconds ago by Mew :3