The Eye of Monstrosity is one of the many monster drops that can be acquired in the Frontier. Viable methods of acquiring the Eye of Monstrosity include the following:
In appearance, the Eye of Monstrosity is the eye of the Monstrosity. Other than that, not much can be said about its overall appearance.
It is possible for players to exchange Eyes of Monstrosity for gold during Slayer's Tasks if the task card is currently active. Other than that, it can be sold to a selling vendor at a selling price of 6,500 gold.