API TYPE Quality
From WoWWiki
The quality of an item is represented in API code as a non-negative integer.
Known values:
- 0 = Poor
- 1 = Common
- 2 = Uncommon
- 3 = Rare
- 4 = Epic
- 5 = Legendary
- 6 = Artifact
API Usage
Quality is the third value returned by GetItemInfo().
Given a quality value, the color used to represent it may be found using GetItemQualityColor().
