Stone of Barenziah: Hall of the Dead
One of the 24 Unusual Gems. Vex in the Ragged Flagon names them once you are in the Thieves Guild.
- Stones of Barenziah – Whiterun Hold
Where to get it
In the catacombs under Whiterun's Hall of the Dead: down the left-hand stairs and to your left, beside a skeleton.
Found in Whiterun.