Rarity

A rarity is a statistic every item in the game has, primarily representing how valuable and rare an item is. Each rarity has a different color, which is applied to the item's name. An item's rarity can also be increased or decreased depending on the Modifier the item has.

Tiers
Rarities are divided into tiers; the higher the tier the more valuable. There are 15 Vanilla Rarities which range from -1 to 11, and the Elements Awoken mod adds 4 new rarities to the game, ranging from 12 to 15, all of which are Post-Moon Lord, as well as an Awakened Mode-exclusive rarity.