The Lexicon was a device created by the Dwemer used as a portable information repository, stored with the sophisticated knowledge of the Dwemer.

It is a quest item found in The Elder Scrolls V: Skyrim. It is received from an Argonian, From-Deepest-Fathoms, who can be found on the Riften Docks. Receiving the Lexicon from her will initiate the quest "Unfathomable Depths."


The Lexicon is a small, black cube with glowing red hieroglyphics crafted by the Dwemer.


Activated Lexicon

The Lexicon opens after being placed on the pedestal.

The Lexicon is actually a portable information repository, containing the memories and knowledge of countless Dwemer. Accessing this knowledge is done with the use of a Lexicon Receptacle.

Once the lexicon cube is returned to its stand, "Elder Knowledge" is received, and grants the active effect "Ancient Knowledge." The perk grants a permanent 25% armor bonus when wearing Dwarven Armor and Smithing increases 15% faster.



  • Considering what effect is gained by placing the Lexicon on its stand, the information contained in the cube likely pertains to armor and weapons crafting and armor usage.


This section contains bugs related to Lexicon. Before adding a bug to this list, consider the following:

  1. Please reload an old save to confirm if the bug is still happening.
  2. If the bug is still occurring, please post the bug report with the appropriate system template  360  / XB1  ,  PS3  / PS4  ,  PC  / MAC  ,  NX  , depending on which platform(s) the bug has been encountered on.
  3. Be descriptive when listing the bug and fixes, but avoid having conversations in the description and/or using first-person anecdotes: such discussions belong on the appropriate forum board.
  •  PC   360   PS3   After completing the "Unfathomable Depths" quest and the Lexicon is removed from the pedestal in Avanchnzel, it may remain flagged as a quest item, meaning it cannot be removed from the inventory.


Start a Discussion Discussions about Lexicon

  • Quest items stuck in my inventory

    5 messages
    • this is old, but you still need the attunment sphere if you ever want to get back to blackreach. (a return to your roots, vulyorthul (misspel...
    • If you want to get rid of it, dump all of your stuff at home and get yourself arrested. Quest items didn't appear in the chest of pla...
  • About the lexicon in the quest Unfathomable Depths

    5 messages
    • It looked like Deepest Fathoms was experiencing psychological torture via exposure to that Lexicon. The Dwemer were well known for using tort...
    • After seeing what the dwemer did to the falmer, I wouldn't put it past them to include something in the lexicon that would either eventua...
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