• Wisdom's Hold
• Item Level 239Disenchants into:
  [Abyss Crystal]: 1-2
• Binds when picked up
  
• Shield
• Off Hand
• 8130 Armor
• 227 Block
• +70 Stamina
  +48 Intellect
• Blue Socket
• Socket Bonus: +5 Spell Power
• Durability 120 / 120
• Requires Level 80
• Equip: Improves critical strike rating by 40.
  Equip: Improves haste rating by 47.
  Equip: Increases spell power by 75.
• Sell Price: 15 4 14

Source

This item can be found inside Cache of Storms after defeating Thorim on hard mode in the 25-man version of Ulduar. It currently holds the record for the best armor rating in the game, at 8130 armor.

Patch changes

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

External links

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