There are six levels of item quality. To find out which quality level an item is look at the color in which the item name is written in the item tooltip.
Here is a table of all the item quality colors:
| item quality | color |
|---|---|
| Wood | 
|
|
Iron |
|
| Copper | 
|
| Silver | 
|
| Gold | 
|
| Jade | 
|