Sith Artifacts, sometimes known as Sith treasures, were priceless dark side items, ancient in their creation but invaluable to darksiders for their potency and unique interaction with the dark side of the Force. Sith artifacts included Sith spellbooks, Sith amulets and talismans, Sith holocrons, Sith swords, Sith scrolls or tomes.
- "They say you have found Sith treasures. What gift have you brought me?"
- ―King Ommin to Aleema and Satal Keto in 3,998 BBY
In the year 3,998 BBY, Jedi Master Arca Jeth sealed a trove of Sith artifacts within the Tomb of Freedon Nadd, after relocating the tomb from its former home under the Royal Palace of Iziz, Onderon's single great city. The tomb and its resident artifacts were then moved to a new location, on Onderon's fourth moon, Dxun.
The Jedi Covenant gathered a number of artifacts and stored them in the Sanctum of the Exalted, encased in a special wrapping to keep their influence from escaping. However, instead of leaving them be, they did tests on the artifacts, causing severe weather patterns on Odryn. The Covenant's retainer, Haazen, even used the Covenant to gather Sith artifacts so he could strengthen his powers.