• Phaelia's Vestments of the Sprouting Seed
• Item Level 226Disenchants into:
  [Abyss Crystal]: 1-2
• Binds when equipped
  
• Leather
• Chest
• 591 Armor
• +85 Stamina
  +86 Intellect
  +75 Spirit
• Yellow Socket
• Socket Bonus: +5 Spell Power
• Durability 120 / 120
• Requires Level 80
• Equip: Improves critical strike rating by 68.
  Equip: Increases spell power by 124.
• 
• Sell Price: 10 56 67

Source

This item drops from Assembly of Iron 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