From the Super Mario Wiki, the Mario encyclopedia
The six kinds of jewels
The Boss Door, where the jewels are placed

Jewels[1] are collectibles in Wario Land 4. Each one is made up of four Jewel Pieces, joined together. Each Jewel Piece is found in a Jewel Piece Box, four in each level. Wario must collect these to proceed in the game, because at the end of each Passage, there is a Boss Door where the jewels fit. When all jewels in a Passage are recovered, Wario gains access to the boss of that Passage. Each Passage has different colored Jewel Pieces to collect:

In the Entry Passage and the Golden Pyramid, there is only one level. That means that there is only one jewel to recover. All the other Passages have four.

Jewels also appear in Densetsu no Starfy 3. Wario collects four blue ones with Starfy in Undersea Ruins but Kyorozo takes them away in Undersea Ruins' level 4 so Starfy and Wario have to retrieve them. They are used to open up the door in level 4 leading to the area's boss — Gachatakkoru.

Names in other languages[edit]

Language Name Meaning
Japanese ほうせき


Jewel's page on other NIWA wikis:
  1. ^ Wario Land 4 official European website[dead link]
    "Jewel Pieces: Each jewel is split up into four pieces hidden in each level. You do not need to find all jewel pieces to move on to the next level in the corridor, but to enter the boss rooms, four completed jewels are required."