Empyrium

Empyrium is described as "the finest material on Argus" by the Lightforged Master Blacksmith Khamir who uses it to create armors for the Army of the Light.

This metal requires a balanced and precise extraction as the core is its most fragile section. It has a starry quality and a mirrored surface, and is considered as very good at interweaving itself into the surrounding elements.

Source
Empyrium is gathered from mining Empyrium Deposits and Empyrium Seams on Krokuun, Antoran Wastes, and Mac'Aree.

Blacksmithing

 * Empyrial Breastplate
 * Empyrial Back Plate
 * Empyrial Chest Plate
 * Empyrial Rivets

Engineering

 * Wormhole Generator: Argus
 * Gravitational Reduction Slippers

Jewelcrafting

 * Empyrial Crown of the Cosmos
 * Empyrial Crown of the Elements
 * Empyrial Crown of the Depths
 * Empyrial Crown of the Titans
 * Empyrial Circlet
 * Empyrial Florid Malachite Setting
 * Empyrial Hesselian Setting