Tense Unstable Diamond can be purchased for 160 from Aether-tech Master in the 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 gives Critical Strike Rating instead of Attack Power. Renamed from Potent Unstable Diamond.
- Patch 2.1.0 (2007-05-22): Added.