Greater Guardian Spear

Acquisition
Core Eye of the North
 * Drop research is ongoing, and can be found here.
 * Isle of the Nameless
 * Zaishen Chest
 * Fissure of Woe
 * Chest of Woe
 * Underworld
 * Underworld Chest
 * Depths of Tyria
 * Slavers' Exile:
 * Chest of the Slaver
 * Cathedral of Flames
 * Enchanted Spear
 * Locked Chest
 * Catacombs of Kathandrax
 * Chest of Kathandrax
 * Oola's Lab
 * Locked Chest
 * Arachni's Haunt
 * Locked Chest

Dye
Dye affects the entire spear. The detailed metallic area will dye to the color specified, while the blades and horns become tinted.

You can closely replicate the default color by using Yellow Dye.