Unidentified fallen object location?

So after a long time spent searching the forum and the wiki, i have to ask where the unidentified object is located? I've heard Sheldon hands it out but after returning to Legen town, he just repeats the same dialogue about Vinoville getting blasted. Riley acts as if theo is still there too. I really hope i don't have to replay up until the 7th gym just to get another mega stone choice.

Oh, I guess we forgot to update those dialogues. We'll adjust them in the next patch.