In Assassin's Creed Brotherhood, what is the name of the fictional Apple of Eden numbered 2?

In Assassin's Creed Brotherhood, the fictional artifact is called Apple of Eden 2.

The Apples of Eden are Pieces of Eden, advanced artifacts created by the precursor civilization known as the Isu. In the series' mythology, they can influence human perception and behavior, making them powerful objects sought by both Assassins and Templars.

Brotherhood centers on Ezio's effort to oppose Cesare Borgia in Renaissance Rome. The Apple associated with the game is identified as Apple of Eden 2, a designation used in the series' artifact numbering. It is recovered and used during Ezio's campaign before eventually being hidden.

The artifact is often simply called “the Apple,” which can cause confusion with other Apples of Eden appearing across the franchise. Apple of Eden 1 is associated with earlier series events, while the Shroud of Eden is a different Piece of Eden with healing properties. The numbered designation is therefore the specific answer.