Rarity indicates how rare a particular item is. Items that are available in various rarities include engrams, weapons, armor, shaders, emblems, ghosts, vehicles, and jumpships. Generally, the rarer the item is, the more powerful it is. There are five levels of rarity, and each level is distinguishable by the color of the item icon background:
- Basic (White)
- Uncommon (Green)
- Rare (Blue)
- Legendary (Purple)
- Exotic (Gold)
Though players may carry as many exotic armor items as they like in their inventory, only one exotic armor piece and one exotic weapon may be equipped at the same time.
Rare, legendary and exotic armor contain Light, necessary to level up beyond 20.