Opal Essence Crystal

is one of the seven essences that players can collect in the world of TERA. It is used in Processing and Alchemy.

is found by harnessing a Node. Harnessing a node will give players between 3-5. Players also have a chance of receiving 1-4 Achromic Essence.

Pulsating Essence can also be acquired by chance when mining a Node.

Source
This essence can only be found in areas aimed at players level 37-38, 40-45 and 60-65. These areas are:


 * Westonia
 * Allemantheia (Province)
 * Val Oriyn
 * Val Aureum