The Pearl is a de-cursed Ender Pearl worn by Alyzanae von Scarlet in place of her lost left eye.
The Pearl provides little sight. Everything is mostly in black and white, some colors appear much darker than they really are.
The Pearl is also the source of magic for Alyzanae. And once she uses too much of her magic, the Pearl takes control of her body and goes berserk, thus turning Alyzanae into Eanazyla.
Her life depends on this pearl. After a foolish mistake of inserting it into her empty eye socket during her rising, her body got corrupted from the power, entwining with Alyzanaes own life stream.