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Luigi's Mansion 10th Floor gems
Under the room with the scale
Vacuum up the sand on the left side of the room to reveal a drain. Pop down with Gooigi to grab the gem.
Main Chamber
Use your plunger on the tomb on the far right side of the chamber, you'll unveil smaller and smaller tombs. The last one contains a gem ghost. Catch it and collect the gem.
Pull the snake statue tail
There is a statue in the hallway leading to the room. Grab the rope on the bottom part and pull, switch to Gooigi to pull the gem out of it's mouth when it opens.
Jewel Chamber
Break the pots in the jewel room, which has you fitting different shaped symbols into the respective holes, which hide a cross shaped design. Grab it and shoot it into the similarly shaped hole in the hallway. Grab the gem inside.
In the sand
Dig through the sand in the big room, suck up a bunch of it. A gem is buried on the left hand side of the room.
In the sand snake
There is a snake missing several segments on the right hand side of the sand room. Use the dark light to fill in missing sections and a gem will pop out.
Luigi's Mansion 3 11th Floor gems
In the glass case in the theater
Pull off the top of a wall unit on the right-hand side of the stage, light up the signal, and a glass wall should lift revealing the gem. It's timed though and the gem is on the other side of the room. Split with Gooigi and use him to pick it up.
In the bedroom past the lobby
If you spin the circular board that is covered in knives then more knives will appear and shoot towards the board, make sure you're out of the way and keep spinning the board with your vacuum. A gem will appear and drop to you.
In the bathroom down the hall
Once you get to the bathroom you'll notice a weird light on the ceiling, try using the vacuum on the whole room and the light will rotate and light up as you do so. After a bit, a gem will pop out.
In a piggy bank in the key room
On top of some furniture in the corner will be a piggy bank, break it open to find a gem.
In the bathroom next to the bedroom
Look in the mirror and you'll see the gem trapped in a painting. Use the dark light to grab it!
Up the magical stairs
Grab the giant hat when you first enter the library, carry it down to the three statues and use vacuum jump to throw it on them. A staircase will appear. Head up it to find a chest with a gem inside.
Luigi's Mansion 12th Floor gems
In the far right hanging rock
Use the globe found behind the bar to shoot and a gem will pop out form inside.
Under the mat
Pull the mat in front of the bar up with the vacuum plug on the wall, then use the vacuum jump. The x marks the spot.
On top of the hidden pirate flag
As soon as you get into the pirate lair bar, look to your right and you'll see a gem in the mouth of a skull. Use your dark light to highlight that and then use the vacuum to pull the rope that appears and the gem will dropdown.
In the weird mermaid statue
Shoot coconuts at it until it breaks and a gem ghost will pop out.
Underneath the sand in a chest
Head right from the entrance to the docks, you'll find two more islands. Use your dark light to create two bridges. One gem will pop out when you form the second one. Go onto the second island and suck up sand to reveal a chest. It will contain another gem.
Luigi's Mansion 3 13th Floor gems
In the glass case next to the elevator
Stand on top of the crest in the ground with Gooigi to have the glass rise.
Ring the bell at reception
Ring it three times and a gem ghost will pop out.
Shoot the Swimming Sign in the Locker Room
Use a soccer ball or boxing glove and shoot the sign, a gem is hiding behind it.
Hidden in a Pillar in the Weight Room
Go and have Gooigi stand on the scale and a secret door will open.
In the Treadmill Room
Light up both the fountain and the stereo at the same time and a gem ghost, plus two golden ghosts, will pop out.
Underneath the showers
Use gooigi to go down the drain, drain the water with the valve, and grab the gem behind the right grate.
Luigi's Mansion 14th Floor gems
Underneath Entrance
Step along with all the lights on the ground that aren't lit up without stepping on the ones that are. Once you do, the lights will change and you will need to split into Gooigi and step on two different unlit spots at the same time a few times. Do that and a staircase underground will open up with a gem and some treasure.
Hit that DJ Block
Take a right turn after you leave the elevator, you'll see two vinyl records on a turntable. Spin them with Luigi and a part of the wall will come out. Use Gooigi to vacuum jump under it a few times and a gem will pop out.
Underneath the left coat rack
Get back into the coat check by vacuum jumping the divider open, then pull every coat off the left coat rack and a gem will pop out from below.
In the disco ball
There's a gem in the disco ball for you to grab when you're done dancing.
In a hidden table left of the stage
Use your dark light to reveal a missing table, a gem will pop out with it.
In a hidden afro backstage
Once you get backstage, use your dark light to highlight a missing afro on the right side of the room.
Luigi's Mansion 3 15th Floor gems
Behind the Elevator
Use Gooigi to take the pipe closest to the elevator, then take a step back into the gap behind the elevator. You'll fall on top of a gem.
Hidden Underneath the Rug
Use both Gooigi and Luigi to stand on both side tables, a gem will pop up from underneath the rug.
Behind the King Boo Art
Turn the statue in front of the art so that it eclipses the picture of boo, then do the same for Luigi once the first picture opens. A gem will be behind it.
Underneath the bathroom
Use gooigi and climb on the wooden plank.
Behind a bookshelf
Pick a diary in the lower area of where you get your first key on the 15th floor, go back up the stairs and put the book on the shelves with ones that look similar. A gem will be revealed afterwards.
At the top of the weird scale elevator
There will be a gem in a gated shelf high up above the scale, careful go from side to side as the scale rises. Use Gooigi to grab it.
If you need to know how to deal with the Luigi's Mansion 3 Boos, we've got the guide for you!
