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Urithiru gem archive

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Urithiru gem archive
City Urithiru
World Roshar
Universe Cosmere
Featured In The Stormlight Archive
This article's title is uncanonical and a fan created one, because an official term or name has not been made yet.

The Urithiru gem archive is a collection of gems bearing encoded messages left by the ancient Knights Radiant. It is hidden in a wall of a former library in the basement of Urithiru.


Shallan, chasing a Midnight Essence created by Re-Shephir, leads a group of soldiers into the basement of Urithiru. They find a room filled with decaying books: the trove of information that Jasnah hoped to find in Urithiru. It has been there so long, however, that the books inside turn to dust when touched.[1]

Eventually, the debris is cleared out and, under Navani's direction, the room becomes a scholarly institute and research center.[2] Renarin, after apparently talking with Glys, somehow causes a tile on the far wall to pop out, revealing a drawer containing a strangely-cut ruby. Jasnah infuses the gem with Stormlight, and Shallan and Pattern realize that the vibrations made as the Stormlight escapes encode a message. Renarin then sends a surge of Stormlight into the wall, causing every tile in it to open, revealing hundreds of hidden drawers.


There are hundreds of drawers behind the white tiles in the library wall, each containing one or more gems; each gem, after being infused, produces a sequence of buzzes that encodes a message. The epigraphs of Part Three of Oathbringer contain the messages from some of the gems.


  • In the entrance chamber of the level containing the gem archive, there is a depiction of a person hovering in front of a large blue disc. This bears some similarity to the depiction of Devotion's Perpendicularity in the hidden room under the Elantris meeting house.


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