Minecraft wiki entry for Chestplate, associated text: In Java Edition, novice-level armorer villagers have a 40% chance to sell an iron chestplate for 9 emeralds. Journeyman-level armorers have a 40% chance to sell a chainmail chestplate for 4 emeralds. Master-level armorers always sell an enchanted[note 1] diamond chestplate for 18-35 emeralds. Novice-level leatherworker villagers have a 2⁄3 chance to sell a leather tunic[note 2] for 7 emeralds. Journeyman-level Leatherworker villagers always offer the same trade.