• Vestments of the Piercing Light
• Item Level 219Disenchants into:
  [Abyss Crystal]: 1-2
• Binds when picked up
  
• Cloth
• Chest
• 311 Armor
• +80 Stamina
  +81 Intellect
  +76 Spirit
• Durability 100 / 100
• Requires Level 80
• Equip: Improves critical strike rating by 62.
  Equip: Increases spell power by 124.
• Sell Price: 8 33 8

Source

This item drops from General Vezax in the 10-man version of Ulduar.

Patch changes

• Patch 3.1.0 (14-Apr-2009): Added. 
  

External links

• Battle.net (EU)
• Wowhead
• Thottbot
• WoWDB