What is the name of the Assassin's Creed artifact that resembles a glowing apple?

The glowing apple-like artifact in Assassin's Creed is called the Apple of Eden.

In the series' mythology, Apples of Eden are Pieces of Eden created by the First Civilization, also known as the Isu. They can influence human minds, create illusions, and control or manipulate people through advanced technology that later cultures interpret as magic.

The Apple is especially important in the first Assassin's Creed game, where Altaïr seeks to understand and protect one recovered from the Templars. Different Apples appear across the franchise, so the term describes a class of artifacts rather than one unique object.

Other Pieces of Eden include the Staff, Swords, Shrouds, and the Crystal Balls. These names are sometimes confused because the artifacts share a common origin and recurring role in the Assassins-versus-Templars conflict.