• Quartz
• Item Level 226Disenchants into:
  [Abyss Crystal]: 1-2
• Binds when picked up
  
• Mail
• Chest
• 1314 Armor
• +99 Stamina
  +81 Intellect
• Yellow Socket
  Blue Socket
• Socket Bonus: +7 Spell Power
• Durability 140 / 140
• Requires Level 80
• Equip: Improves haste rating by 66.
  Equip: Restores 33 mana per 5 sec.
  Equip: Increases spell power by 113.
• 
• Sell Price: 12 77 51

Source

This item drops from the XT-002 Deconstructor in the 25-man version of Ulduar.

Patch changes

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

External links

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