Luigi’s Mansion 3 has 102 gems, six on each of its 17 floors. Use the floor table below to see which rooms hold them, then check the tool and return-trip notes before you head back to a floor you have already cleared. The room-by-room solutions and maps come from Nintendo Life’s Luigi’s Mansion 3 gem guide (2022), which this article follows for floor and room names.
Floor order and gem colors
The hotel’s floors do not run in a single numbered sequence. The guide covers them in this order:
- Basement B1, then 1F through 9F
- Basement B2
- 10F through 15F
Every floor uses the same six gem colors: white, red, blue, green, violet, and gold. When you look up a gem, the color tells you which of the six you are hunting for on that floor.
Gems by floor
The table lists each floor’s name in the guide and the rooms where its six gems are found. Floors where the guide does not give a specific room list are described by their themed areas, and the full guide gives the exact placement for each color.
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- He may still be cowardly, but Luigi has more tools and abilities at his disposal than ever before. Master Luigi’s new powerful moves of Slam, Suction Shot and Burst
- Team up with Professor E. Gadd’s latest invention, Gooigi, an all-green doppelganger able to slip through tight spaces, walk on spikes, and otherwise help Luigi overcome obstacles he can’t get past alone
- Interchange between Luigi and Gooigi as one player, or grab a friend and control one each at the same time
- Explore the Last Resort, ascending through its differently themed doors full of quirky contraptions and haunting enemies
- Race the timer with up to 8 players to clear objectives on a series of doors in the ScareScraper
| Floor | Floor name | Gem rooms and areas |
|---|---|---|
| B1 | Basement | Garage, elevator shaft, laundry room, service hallway, and service stairwell |
| 1F | Grand Lobby | The lobby and upper level, with separate west and east room directions in the guide |
| 2F | Mezzanine | Restroom, ballroom, kitchen, and other rooms |
| 3F | Shops | Hotel shops and their associated spaces |
| 4F | The Great Stage | The stage and surrounding rooms, with stage-specific object and performance puzzles |
| 5F | RIP Suites | Guest suites and shared areas |
| 6F | Castle MacFrights | Medieval castle rooms and themed environmental puzzles |
| 7F | Garden Suites | Themed garden rooms |
| 8F | Paranormal Productions | Studio sets and production spaces, each with its own prop sequence |
| 9F | Unnatural History Museum | Elevator hall and museum exhibits, including dinosaur displays |
| B2 | Boilerworks | Boilerworks areas, including the old reservoir |
| 10F | Tomb Suites | Tomb-themed rooms and their environmental mechanisms |
| 11F | Twisted Suites | Themed suites with room-specific illusions |
| 12F | The Spectral Catch | The ship and the beach; one beach clue follows the floor boss |
| 13F | Fitness Center | Gym lobby, weight room, locker room, shower room, training room, and elevator hall |
| 14F | The Dance Hall | The dance floor and associated areas, including post-boss collection steps |
| 15F | Master Suite | Library, bathroom, lounge, bedroom, and elevator |
Tools that unlock gems
Three tools account for most of the gems that are not simply sitting in plain view. Each one is needed on specific floors, so the floor’s entry in the guide tells you which to bring.
Poltergust G-00
The Poltergust is the main way to find gems. Nintendo’s Play Nintendo tips page describes using it to suck up an object and fire it at other items to uncover treasure, including gems. The same tips page notes that Suction Shot or Burst can destroy furniture, which is sometimes how a hidden gem is revealed.
Dark-Light attachment
Dark-Light reveals invisible objects such as furniture and ghost footprints, and it can pull items out of paintings, according to Nintendo’s tips page. You obtain it on your first visit to 2F. On B1, Dark-Light is needed for some gems; the violet gem there is a painting that only shows up under Dark-Light.
Rank #2
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- Catch ghosts and solve puzzles to rescue Mario and friends in the Last Resort hotel; Each floor of this towering hotel is themed, from the décor to the puzzles to boss!
- Utilize the functions of the all-new Poltergust G-00: Pummel ghosts with a Slam, break through defenses with the Suction Shot, and blow back groups with a Burst
- Luigi can call upon and control Gooigi, his all-green doppelganger, who can do what Luigi can’t; Gooigi can slip through tight spaces, walk on spikes, and help Luigi overcome obstacles
- Change between Luigi and Gooigi in single player, or let a friend play as Gooigi for 2-player co-op
- Up to 8 players can work together to ascend the Scarescaper via local wireless or online; It’s Team Luigi vs. Team Gooigi in a mini-game battle to see which is the ultimate team of ghost hunters
Gooigi
Gooigi joins Luigi on your first visit to 5F, and the guide uses it for several routes and gems afterward. Some 5F doors and routes need a two-character plunger interaction, and the green gem on 13F requires Gooigi to be sent through the shower room’s central drain. Gooigi is also needed for some gems on B1 and 1F.
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Several gems cannot be taken on the first pass through a floor. Nintendo says revisiting completed floors is a normal way to search for more treasure, so plan these as expected follow-ups rather than missed collectibles.
- B1: Gems that need Dark-Light (available from 2F) or Gooigi (available from 5F) require coming back down after those tools are unlocked.
- 1F: Dark-Light and Gooigi are both needed for some of the six gems here.
- 2F: At least one gem requires a return after you gain access to the east wing following 5F.
- B2: The old reservoir is inaccessible until after your first arrival on 12F.
Worked examples from the guide
These four gems show the level of detail the full guide provides. Use them as a model for checking the room-by-room steps, not as a substitute for them.
Rank #3
- This set is a giant Ovache hotel. Luigi is invited to a luxury hotel. But it was the trap of owner who is the big fan of King Teresa! Mario, Peach, and Toad are exposed and trapped in the image while Luigi is napping in the hotel. To help your buddies, Luigi is a little timid way to travel on new adventures at the Ovacue Hotel, with one hand invented by Dr. Oya Mar
- Luigi's new companionship "Gooigei". In this work, Gooege is a new buddy with Luigi that is made of green gel-like material, and it will challenge mystery and contract with two people to work together with the grate and dangerous traps. It is also suitable for play and can be switched between 2 players simultaneously during the story, 1P is Luigi, 2P is "Gooige" at the same time and allows 2 people to enjoy stories
- A little timid Luigi exterminates a bizarre hotel
- The Terror Tower is a cooperation with up to 8 people. In the cooperative multi-play mode, it can be used for local play, as well as online play, it includes a Teller Tower that can be enjoyed by up to 8 people (8 players). Whether you knock down all the goose within a limited time, or find out the lost mushroom, you can tackle various challenges and aim to the top floor of the tower! Each Nintendo Switch can be played up to 2 players, and can be used for up to 8 players with up to 4 players.
- The latest release in the Louise Mansion series is now available in the Nintendo Switch. Genre: Action Adventure
B1 white gem
Uncover the car beside E. Gadd’s vehicle, then flash the trunk light to reveal the gem.
B1 violet gem
The gem is hidden in a painting. You need Dark-Light to make the painting visible and pull the item out.
13F green gem
Clear the shower room, then send Gooigi through the central drain to reach the gem.
Rank #4
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- Catch ghosts and solve puzzles to rescue Mario and friends in the Last Resort hotel
- Each floor of this towering hotel is themed, from the décor to the puzzles to boss!
- Utilize the functions of the all-new Poltergust G-00: Pummel ghosts with a Slam, break through defenses with the Suction Shot, and blow back groups with a Burst
- Luigi can call upon and control Gooigi, his all-green doppelganger, who can do what Luigi can’t
15F gold gem
The gold gem is reached through the see-saw section of the master bedroom.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.A checklist for working through the floors
- Note which tools each floor requires before you start it, and check the return-trip list above.
- Clear each floor with the Poltergust first, then go back for the gems that need Dark-Light or Gooigi.
- Track the six colors on each floor separately so you can see which ones are still missing.
- Use the guide’s room-by-room steps and maps for any gem you cannot locate after a full pass.
About the source
Nintendo Life’s gem guide is dated 2022 and is the reference for room-by-room solutions and maps. Nintendo’s Play Nintendo tips page is official but unsigned, so its wording is attributed to Nintendo rather than to any individual. The game is a Nintendo Switch release published by Nintendo.
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