Eye of Zul

Eye of Zul is an -quality gem which can be obtained through prospecting, transmuting or bought via PvE or PvP tokens. Jewelcrafters are then able to cut the Eye into a wide variety of green jewels.

Source
This item can be obtained via the following means:
 * Prospecting
 * Alchemy level 450 - Transmute: Eye of Zul (3xForest Emerald)
 * Icy Prism has a chance of yielding an epic gem.
 * Purchased with from:

Jewelcrafting

 * Dazzling Eye of Zul
 * Enduring Eye of Zul
 * Energized Eye of Zul
 * Forceful Eye of Zul
 * Intricate Eye of Zul
 * Jagged Eye of Zul
 * Lambent Eye of Zul
 * Misty Eye of Zul
 * Opaque Eye of Zul
 * Radiant Eye of Zul
 * Seer's Eye of Zul
 * Shattered Eye of Zul
 * Lightning Eye of Zul
 * Steady Eye of Zul
 * Sundered Eye of Zul
 * Tense Eye of Zul
 * Turbid Eye of Zul
 * Nimble Eye of Zul