Alternate gem quality
This article describes historical game content.
The alternate quality system was removed in Version 3.23.0.
Skill gems and support gems used to have different quality types: Superior (default), Anomalous, Divergent, and Phantasmal, with the latter three types of qualities exclusively obtainable from Heist. Not all gems had all four quality types. It could not grant the gem a quality effect it already has. Some of these qualities altered the stats of the gem in drastic ways.
Alternate quality gems were only acquirable from Grand Heist with the "Unusual Gems" target type either directly by obtaining them from Curio Displays or indirectly by using a 
Prime Regrading LensPrime Regrading LensStack Size: 20Change the type of quality of a skill gem with quality to another random qualityRight click this item then left click a skill gem to apply it.
or 
Secondary Regrading LensSecondary Regrading LensStack Size: 20Change the type of quality of a support gem with quality to another random qualityRight click this item then left click a support gem to apply it.
, also found in the same areas.
This system was later replaced by the transfigured gem system in version 3.23.0, which also removed the distinction of Blueprint reward types.
The following divination cards also historically provided alternate quality gems or regrading lenses as a reward:
Terrible Secret of Space
Terrible Secret of Space8Level 21 Transfigured Golem Gem
Quality: +23%
CorruptedThey said they were here to protect us.
- Dying Anguish
Dying Anguish8Level 19 Transfigured Gem
Quality: +19%Moribund, he gazed upon the journey taken as blood trickled down his chin. His eye closed on the city ahead that he would never call home. - The Hook
The Hook8Level 21 Transfigured Gem
Quality: +23%
CorruptedEvery obsession began with a single, innocent taste. - Doryani's Epiphany
Doryani's Epiphany3Level 21 Transfigured Gem
Quality: +20%
Corrupted"Virtue gems have facets beyond those that can be seen by the mortal eye. Let us look deeper..."
