Purified Amethyst
- Purified Amethyst
- Binds when picked up
- Unique-Equipped
- +5 Intellect and +4 Versatility
- "Matches any socket."
- Sell Price: 92
Source
This item can be purchased for 40 
from Aether-tech Adept in Blade's Edge Mountains.
Patch changes
Patch 4.2.0 (2011-06-28): Now stacks to 20. - Patch 4.0.1 (2010-10-12): Now grants Intellect instead of Spell Power. Renamed from Unstable Sapphire.
Patch 3.0.2 (2008-10-14): All items and effects which grant bonuses to spell damage and spell healing are being consolidated into a single stat, Spell Power. 
Patch 2.1.0 (2007-05-22): Added.
