Whereabouts of All the Stones of Barenziah in Skyrim
||Hall of the Dead (Whiterun). Inside the Catacombs; go down the left stairs and it will be to your left, next to a skeleton.
||Andurs' Arkay Amulet/Pilgrimage (doesn't send you into the catacombs)
||Dragonsreach, the Jarl's bedroom, on the right-hand end table.
||Jorrvaskr's living quarters, on the bookshelf in Kodlak's room.
||Blue Palace, Jarl's bedroom, right side of the bed on top of the wardrobe.
||Proudspire Manor. Buy the house. The stone is found on the top floor in the master bedroom, left of the door. (It's there whether or not you purchase the bedroom upgrade.)
||Mistveil Keep, Jarl's bedroom. Go up the stairs and through the occasionally locked center door. It will be on the end table left of the bed.
||Palace of the Kings Upstairs. Take the first door to the left upon entering the main palace area, then find Wuunferth's room at the end of the hall.
||Blood on the Ice
||House of Clan Shatter-Shield, on a bookshelf in the room to the left of the top of the stairs.
||Mourning Never Comes
||The Treasury House, on a bedside table in Thonar's bedroom, which is down the hall on the left from where you enter the front door. You may need to pick an apprentice-level door, but no one reacts.
||The Forsworn Conspiracy
||Understone Keep's Dwemer Museum, on a table in the first room to the left. Note: Do not go into the museum after completing the quest Hard Answers until you have finished the quest Darkness Returns. See the Hard Answers quest page for details.
|College of Winterhold
||Arch-Mage's Quarters. Access may be gained at the end of the quest Under Saarthal.
|Dead Crone Rock
||On the stone altar opposite the Word Wall.
||Pieces of the Past
||The gem is in the top floor bedroom, next to the bed.
||Promises to Keep
||The gem is on the table at the end of Ansilvund Burial Chambers.
|Stony Creek Cave
||The gem is on the table next to the alchemy lab in the room off to the side.
||After falling down the trapdoor in front of the chest and the Word Wall, the stone is next to the alchemy lab and chest on the right.
||Head straight up the stairs and to the right.
||Hitting the Books
||Head down into the waterlogged bowels and up the opposing stairs. In the last room on the table.
||The Dainty Sload
||On the table with two bodies in front of the Word Wall.
||The gem is in the bedroom behind the throne in Yngvild Throne room.
||Toying With The Dead
|Hob's Fall Cave
||The gem is near the alchemy set under the bridge near the beginning of the cave.
|Reeking Cave or Thalmor Embassy
||Prior to patch 1.4, the stone is located in the Thalmor Embassy in Elenwen's Solar on the second floor. After patch 1.4, inside Reeking Cave next to a corpse in the back. Acquiring the gem during the Diplomatic Immunity quest is advised, since the easiest way to access the cave is during your escape near the end of that quest. However, it is still possible to access Reeking Cave from the outside without doing that quest.
|Pinewatch Bandit's Sanctuary
||Head down to the basement and press the hidden button to the right of the bookcase, providing access to the bandits' hideout. The gem is found in a locked room in the Bandits' Sanctuary.
|Dark Brotherhood Sanctuary
||On the dresser in Astrid's room. It is still accessible after the Death Incarnate quest; however, the game may freeze when you try to enter the Sanctuary after completing that quest.