Archmage's Endurance

Archmage's Endurance
Using this gem will grant you 20% extra duration on the spells you cast. You can augment yourself five times in this way, for a total effect of doubled spell duration, but you will need a new gem for each augmentation. This does not affect spells cast on you using gems.
XP Cost	1 Billion xp
Related Quests	Augmentation Gems
Obtained By	Give a Blank Augmentation Gem to Nawamara Ujio in Tou-Tou.
Notes	For level VII spells, each augmentation adds 12.5 minutes.