- If you were looking for the items in Pokémon Mystery Dungeon, see trade items.
Gems (Japanese: ジュエル Jewel) are one-use type-enhancing items introduced in Generation V. There are 18 types of gems, corresponding to each of the 18 types. A gem is consumed when the Pokémon holding it uses a damaging attack that matches the gem's type, and the attack's power is boosted by 30% (50% prior to Generation VI). The gem will not be consumed if the attack misses or fails. Bide, Focus Punch, and damaging moves with a charging turn consume the gem immediately before dealing damage.
If the type of a move is changed with Normalize, Pixilate, Refrigerate, Aerilate, Ion Deluge or Electrify, the gem must match the type of the move after it has been modified. Moves that call other moves will only consume a gem if the called move is of the appropriate type for the gem. Hidden Power and Weather Ball can consume gems, but only if the type of the gem matches the type of damage that will be dealt. Judgment and Techno Blast can consume Normal Gems, but will be Normal-type for that execution even if the Pokémon is given a Plate or Drive by Symbiosis upon consuming the gem. If a Pokémon consumes a gem for an attack and is immediately given another of the same gem by Symbiosis, that gem will not be consumed for that attack; if a Pokémon consumes a Power Herb using a damaging move and is immediately given a gem of the appropriate type, that gem will be consumed for that attack. Fixed-damage moves (such as Dragon Rage, Counter and Endeavor) will consume gems but will not have their damage modified. Present consumes a gem even if it heals the target, but the amount healed is unaffected. Fling will fail if the user is holding a gem. Struggle, Grass Pledge, Water Pledge, and Fire Pledge will never consume a gem.
In Generation VI, a Fairy Gem was created to correspond with the new Fairy type; in spite of this, the Normal Gem is the only gem obtainable in Generation VI and Generation VII games.
