Azura's Star (Skyrim)

Azura's Star is one possible reward for the quest The Black Star (Quest). Bringing the Broken Azura's Star to Aranea Ienith instead of Nelacar grants the Dragonborn with this Soul Gem-like Daedric Artifact. Similar to Soul Gems, Azura's Star has the ability to trap white souls, or those of non-sentient creatures. These souls can be used for enchanting and for recharging weapons. Unlike ordinary Soul Gems, Azura's Star is not destroyed after use: it is simply emptied, and must be filled with another soul to be used again.

Like some other Daedric Artifacts in Skyrim, town guards will comment on your possession of it.