• Duskhallow Mantle
• Item Level 115Disenchants into:
  [Large Prismatic Shard]: 1 (99.5%)
  [Void Crystal]: 1 (0.5%)
• Binds when picked up
  
• Cloth
• Shoulder
• 117 Armor
• +10 Intellect
  +12 Stamina
• Red Socket
  Yellow Socket
• Durability 50 / 50
• Requires Level 70
• Equip: Improves critical strike rating by 24.
  Equip: Increases spell power by 29.
• 
• Sell Price: 2 65 67

Source

Dropped by Priestess Delrissa in Magisters' Terrace.

Patches and hotfixes

Patch 2.4.0 (25-Mar-2008): Added 

External links

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