• Design: Purified Shadowsong Amethyst
• Binds when picked up
• Requires Jewelcrafting (375)
• Requires Shattered Sun Offensive - Exalted
• Use: Teaches you how to cut a Purified Shadowsong Amethyst
• [Purified Shadowsong Amethyst]
• Requires [Shadowsong Amethyst]

Source

This item is a reputation reward; you must be exalted with Shattered Sun Offensive to purchase it from  Shaani <Jewelcrafting Supplies> at Sun's Reach Harbor, Isle of Quel'Danas, or  Ontuvo <Jewelcrafting Supplies> in Shattrath City.

Patches and hotfixes

Patch 2.4.2 (2008-05-13): Added 

External links

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