Quality grades
All crafted items (furniture, armor, bolts, etc.) – but not intermediate materials (bars, blocks, etc. except cloth, which does have quality levels) – are bracketed by characters that show the quality of their craftsdwarfship. Dyeing also has a quality level, as does Decorating/Encrusting (with gems, leathers, cloth, etc) and engravings. Prepared foods have quality levels.
| Weapon To-Hit /|
Armor Deflect Modifier
|*Item Name*||Superior quality||4x||unknown|
|«Item Name»||Decorated object||Varies||unknown|
 Admiring furniture
Quality has an impact on the amount of happiness a dwarf gets from admiring furniture only to the extent that it contributes to the furniture's value. That is, if there's a no-quality statue and a masterwork statue which have the exact same monetary value, they'll each give the same amount of happiness when admired (assuming the dwarves have no preference for the material of either statue). Furniture quality has no influence on how often a piece of furniture is admired.
 Changes to artifact weapons
Toady gave us a quote on weapon and armor quality, giving the game qualities of an "artifact" in v0.31: