The Spectral Jeweller

The Spectral Jeweller is a special Halloween NPC that resembles a Haunter, although it is colored red. It can be spawned using the /halloween command.

Upon interacting with the Spectral Jeweller, it will state, "I'm here to exchange your hallowed gems!". These "hallowed gems" refer to seventeen different Gems (one for each type) that each spawn in different Gem structures, which spawn in different biomes that correspond to each type. Unlike normal Gems, the Gems found in these Gem structures are prefixed with "Hallowed" (e.g., "Hallowed Dragon Gem"). Each hallowed Gem can be given to the Spectral Jeweller via right-click, and if all seventeen types of hallowed Gems are given to the Spectral Jeweller, the player will be rewarded with an Egg containing a Misdreavus. After completing the Spectral Jeweller's task, the player cannot redo the task in the same world, even if multiple Spectral Jewellers are spawned.

Unlike other Pokémon, the Spectral Jeweller cannot be engaged in battle or captured.