Not in Ruby Saphire Emerald LeafGreen or FireRed, it's in Platinum only, once you have caught/defeated Giritania go back into the Distortion World and go to the end and there will be an item it is the Griseous Orb :)
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The Griseous Orb is only available in Pokemon Platinum.
It is called the Griseous Orb.
The griseous orb cannot be gotten in diamond. it's a platinum exclusive.
you cant
in depends. can you be more specific?