What are those different qualities of gear in Diablo 3?

There are 8 types:

1. Normal Items: items are white, the basic type of items in the game, with no magical effects.

2. Gray items: items are gray, belonging to items without any value.

3. Magic items: items are blue, low-level magic items.

4, Rare items: items are golden in color, items with many random magic effects, attributes.

5. Set items: set items are no longer categorized separately, they will exist in each item class.

6. Purple Items: Items are purple, this color was eventually confirmed to be used for Rune Stones.

7. Quest Items: Quest Items and Plot Related Items use the color green in Diablo 3.

8. Legendary Items: Items are orange in color and are the highest quality items in the game, they have unique names, special appearance and will come with special effects, attributes.

Expanded Information

Diablo III equipment settings:

1. Weapons.

Because there is no restriction of the Rune Language, the name and appearance of the weaponry itself such as swords, axes, hammers, spears, and other specific classifications are no longer decisive. Weapon's are mainly categorized into melee and long range, melee weapons are divided into single and double handed, while long range weapons are still the traditional bows and crossbows. Throwing weapons from the second generation were eliminated in this generation of the game, while spears were changed to one-handed equipment.

2. Protective gear.

In addition to following the second generation's defense parts (i.e. helmets, clothes, belts, gloves, and shoes), shoulder armor, wrist guards, cloaks, and pants were added. The restriction on the use of defense gear continues the practice of the previous two generations, in addition to character-exclusive equipment, as long as the character's attributes meet the requirements for equipment, all professions can use regular protective gear. And the distinction between the second generation regarding light, medium and heavy armor has been removed.

3. Exclusive equipment.

This generation's character exclusive equipment is more explicit, and unlike the second generation, there will be no more props such as scepters, staffs, and canes that are not restricted by occupation but actually only apply to a certain occupation. Each profession has at least three types of exclusive equipment, varying from weapons to gauntlets to side items, thus increasing the overall categorization of equipment. Exclusive equipment usually has a strong enhancement effect on the key skills or attributes of that profession.

Baidu Encyclopedia - Diablo III