Circlet of Logos (also known colloquially as "the crown", "the mask", "the headpiece", "the hat", "the headgear", "the helmet", or simply "the Circlet") is an Artifact Piece in Genshin Impact. It can increase a character's stats and currently has 7 possible main stats: HP%, DEF%, ATK%, Elemental Mastery, Crit Rate%, Crit DMG%, or Healing Bonus%. Artifact Pieces can appear in all rarities (1-5 stars).
It is considered the second-hardest artifact piece to get "good stats" on, after the Goblet of Eonothem, because of the rarity in which certain main stats drop and the number of different main stats it can have. Certain community-made experiments show the highest probability of main stat are DEF% (24%), HP% (22%), and ATK% (22%), while the lowest are Elemental Mastery (5%) and Healing Bonus% (7%). Crit Rate% and Crit DMG% both appear to have a 10% chance to drop each.