Item rarity

In Guild Wars, the rarer an item is, the more valuable and powerful it is. There are five levels of item rarity. They are, in ascending rarity:
 * 1) White: Common items.
 * 2) Light Blue: Less common items.
 * 3) Purple: Uncommon items.
 * 4) Gold: Rare items.
 * 5) Green: Unique items. Items that are dropped by a boss (only found in Sorrow's Furnace and Grenth's Footprint) and are unique to that boss.

On weapons, Focus Items and shields the chance for a magical modifier or weapon upgrade increases with rarity White items will have no upgrades or modifiers, Blue items mostly have one modifier or upgrade, and Purple or Gold items have usually more than one modifier or upgrade.

On Salvage items the chance for a minor, major or superior Rune increases with rarity. White salvage items have no runes applied; Blue salvage items indicate that a Minor rune is applied, Purple salvage items indicate either a Minor or a Major rune, and Gold salvage items indicate either a Major or a Superior rune.