Its in the room where Giratina is in which is turn back cave.
get to the top of mt. cornet and you battle team galactic then go into the reverse world
There is not a code to get the griseous orb in platinum you must go down spring path into turn back cave and go to the end. There will be a portal. Go through it and you will get to the reverse world. When you get to the end wher you met giratina and saw Cynthia and Cyrus there will be the griseous orb.
go to the unknown cave and get through 50 doors with out failing and you will go to the reverse world and go to spear pillar in the reverse world and gratitena will be there
you would need to fight the league four cause Cynthia would be blocking the turn back cave.once you beat her go to the turn back cave and into the reverse world and get the platinum orb. Then put the orb onto giratina. you need to go to turn back cave and go into the istorsion world and get the griseous orb.
You need to battle Girtina in the Reverse \World then you will be able to go to Sunnyshore
In Turnback Cave after Spring Path on route 214 (must find in cave after many rooms)
Yes you're allowed to go to the distortion world again, but you have to go through Turnback cave to find it.
if its platinum i don't think you can because it leads to the reverse world where you just came from and ther is nothing there to see or catch because there aren't any Pokemon in the reverse world its only a specific guess because im past that part that's wrong. In platinum after you defeat the E4 and Cynthia you can go back into the Distortion World as Cynthia is not blocking the Path anymore. There, you can find the Griseous Orb.
its in that cave that you go to, turn back cave.XD
in platinum you get it at the reverse world in pearl and diamond you get in a garden between pastoria city and i forget the other one
You have to go to the pastoria great marsh and go into the cave and he should be there.
go to mt. cornet and go a cave