Device or Vehicle

Emerald Eye of Ekron
Nick Name
Emerald Eye
Creator or Inventor
Emerald Head of Ekron
Owner or Possessor

Emerald Empress

Mordru

Scavenger

Violet

Function or Uses
Eye of an immense mystic beast known as the Emerald Head of Ekron possessing powers capable of a wide variety of functions.
Size
~2 ft.
Weight
Unknown
Special Properties
Contains a sentience which is attracted to beings with strong emotions.  Totally indestructible, even if shattered it will reform and has only been weakened by the element Kryptonite.
Regularly Appearing

Adventure Comics

L.E.G.I.O.N. '90

Legion of Super-Heroes Vol. 1, 2, 3 & 4

Superboy and the Legion of Super-Heroes

First Appearance
Adventure Comics #352 (Jan. 1967)
Creator
Mort Weisinger, Jim Shooter & Curt Swan
Origin
A sentient mystical artifact that seeks to control others as outlets for its energies. Attracted to strong emotions, such as insecurity or desire for revenge, it prefers to seduce its subjects.

Its origins are unknown, possibly the remains of a mystical creature.  Its existence has been recorded since the 20th Century.  One of the most powerful weapons in existence known as the Emerald Eye of Ekron.