• Cloud Stone
• Item Level 53Disenchants into:
  [Small Brilliant Shard]: 1
• Binds when picked up
• Held In Off-hand
• +10 Intellect
  +10 Spirit
• Requires Level 48
• Equip: Increases spell power by 12.
• Sell Price: 1 1 63

Source

This off-hand drops off of Landslide in Maraudon, near the end of the final run towards Princess Theradras.

Patches and hotfixes

Patch 1.2.0 (18-Dec-2004): Added 

External links

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