there is no stone. you find the pokemonn in soloceon ruins. You should first find the hiker the man who is fasinated by unown near veilstone city.
You solve the stone panels in the Ruins of Alph. If you dont solve the stone panels, you will find no UNOWN.Dont ask me why I wrote UNOWN that way.
In Pokemon Mystery Dungeon: Explorers of Time, Darkness, and Sky, players can obtain the Unown R Stone in Rock Aegis Cave by defeating a certain number of Unown in the dungeon. Keep exploring the dungeon, defeating Unown enemies, and eventually, you'll find the Unown R Stone as a reward for your efforts. Good luck!
You can find unown in solaceon ruins (cave in solaceon town ). There are many different unown forms in there, but i guess you will find what ur looking for ! : - ))
the "?" unown is in the same chamber as the "A" unown. the "!" unown is in the same chamber as the "Z" unown. it just takes time. be patient
you can find unown I in Weepth chamber, unown ! in Viapois chamber, and unown ? in Monean chamber.
You must be talking about Aegis Cave. Check the stone marker that you are talking about. A word, spelled in Unown, will appear. In the dungeon-not where the stone marker is, but the dungeon part of Aegis Cave- are Unown. If you defeat an Unown, it may drop a stone shaped like itself. You must collect the stones that spell out the word on the stone marker. Then, check the stone marker. Close your eyes(in the game) when told to. The stones that you collected should react with the stone marker, revealing a hidden stairway.
I guess you could call unown rare because you can only find it in the solacian ruins but when you go there you definitely find.
There is no place known as Unown Ruins, but you can find Unown in Solaceon Ruins in D/P/Pt and Ruins of Alph in HG/SS.
You have to get all the Unown, A-Z, so that guy will complete the tunnel. There you will find Unown ? and !. If this is not what you are looking for, please rephrase the question.
u have to catch all the unown
to the right of solaceon town
If you look carefully in the monean chamber and viapois chamber you can find a secret unown.