What is the name of the Apple of Eden recovered by Altaïr in Assassin's Creed?

Altaïr recovers an Apple of Eden in the original Assassin's Creed.

The Apple is a Piece of Eden, an advanced artifact created by the Isu, the ancient civilization called the First Civilization in the series. It can influence human perception and behavior, making it a coveted object in the conflict between Assassins and Templars. Altaïr encounters it during his missions in the Holy Land and eventually takes possession of it.

The artifact's powers are central to the game's plot and to the wider mythology. Its visions and effects help explain why both factions seek control of Pieces of Eden. Later games introduce other Apples and related artifacts, so the series does not contain only one Apple.

The Staff, Sword, and Shroud of Eden are separate Pieces of Eden with different histories and abilities. Altaïr's recovered artifact is therefore specifically an Apple, not a generic “artifact” or one of the other named relics.