• Design: Powerful Earthstorm Diamond
• Item Level 73Disenchants into:
  Not disenchantable
• Requires Jewelcrafting (365)
• Requires Consortium - Honored
• Use: Teaches you how to cut a Powerful Earthstorm Diamond.
• [Powerful Earthstorm Diamond]
• Requires Earthstorm Diamond (1)
• Vendor 12

Source

This design can be purchased from Ythyar in Karazhan near the Chess Event. You must be honored with the Consortium to buy this item.

External links

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