Luigi’s Mansion 3 Hidden Gem Locations: Where to Find All Hidden Gems

Fourth Floor Gems – The Great Stage

1. This gem can be found in the women’s restroom by shining the dark light on the right side of the sink. Examine the revealed faucet and a ghost will pop out. Defeat it to get the silver gem.
2. This hidden red gem can be found in the dressing room after defeating the piano boss ghost –it’s on the left side of the stage. Use the dark light on the piano in the room and then interact with it and the gem will pop out.
3. This hidden blue gem is found in the concession stand, which is connected to the men’s restroom. Once you’re in, use your vacuum on the bottles in the middle of the room to open up the safe. You need to either expel or suck in air while moving from the left-most bottle all the way to the right one to play a musical tone.
4. This green gem can be obtained after getting the super suction ability after going on the Toad escort mission on floor B2. Go back to the machine on the stage where you fought the piano boss and then use your super suction power to destroy the wall to find a television. Flash it and then go inside of it to end up in a different location. Just suck up the popcorn on the ledge and the gem will pop out.
5. This hidden purple gem can be immediately obtained upon walking into the fourth floor from the elevator. You’ll see a huge tuba in the corner of the lobby that can be blown into by using the ZL button. The trick is that you need to have Luigi blow air into it while Gooigi goes to the side and sucks in the gem after it blows out of the tuba.
6. This yellow gem can be found right after you defeat the ghost who is waving the long carpet up and down in the hallway. You’ll see a popcorn machine in the west corner that is glowing green. Just keep flashing it with the strobe light to make the gem fly out of the machine.

Fifth Floor Gems – RIP Suites

1. This silver gem is found in room 508 — on the balcony to be exact. Look through the telescope and a ghost will appear. Suck it up to get the gem from it.
2. Go to room 501 first. Use your dark light on the area to the right of the big wardrobe to reveal a hidden door. This leads outside and then you have to walk along the side to get to the gargoyle statue that is holding the red gem.
3. This blue gem can be found in a secret room that is found behind a vending machine near the elevator. Simply shoot the plunger on the top of the machine to pull it down. Go into the room and then use your plunger to pull the metal square to the left of the drying machines and the gem will be found in that little room.
4. This green gem can be found inside of a statue in the hallway near room 506. Go into the room and then come back out and there should be a ghost nearby. Slam the ghost into the statue to break the gem loose.
5. This hidden purple gem can be found in room 507 bathroom on the fifth floor. Go in the backroom and then have Gooigi slip through the wall on the right side of the room to grab the gem.
6. This yellow gem is in the room 502 bathroom. Fill up the tub with water and a yellow box will pop out. Break it with your plunger to find a gem.

Sixth Floor Gems – Castle MacFrights

1. This silver gem can be found as soon as you defeat the King boss in the coliseum. Go upstairs and if you simply follow the path, the gem will be in plain sight on the ground.
2. This red hidden gem can be found in the hallway marked as the Hall of Armor on the map. Use your dark light in the top right corner and a suit of armor will appear. Shoot its chest with a plunger and pull to get the gem.
3. This blue gem can be found in the room with the massive open barrels that you can walk into. One barrel at the right end of the room will have an opening that you can peer into. Go inside the barrel beside it and walk into the barrel that’s standing upright and then walk up the ladder to find the gem.
4. This green gem can be found in the hallway leading up to the coliseum. Use the dark light on the area between two lit torches and a door will appear. You’ll find the gem in here.
5. This purple gem is found in the armory. Simply open up the big chest in the middle of the room
6. This yellow gem can be found after you take the lift down into the room with all of the red ghosts. The gem can only be obtained by walking through the bars with Gooigi. You’ll see it hanging from a black cage.