Luigi’s Mansion 3 Gems Guide Pt.1: All Gems Floors B1F to 8F

Luigi’s Mansion 3 gems aren’t always easy to find. With a total of 102 Gems to find, there are six gems on each floor of the game. That’s a lot of searching. 

You can buy a hint from Luigi’s pal E.Gadd to find the gems, though these hints are limited in number. They only show you the general area a Gem is in.

Figuring out gem hiding spots is part of the fun in Luigi’s Mansion 3, but sometimes, you just want to go fast. That’s why we’ve put this handy walkthrough guide together. We’ve put the locations in the order the game compiles the collectibles, not necessarily the order you’ll find each one on each floor.

You can find the second part of this guide here: Luigi’s Mansion 3 Gems Guide: All Gems Floors 9F to 15F.

Luigi’s Mansion 3 Gems Guide Pt.1: All Gems Floors B1F to 8F

Luigi’s Mansion 3: B1 Gem Locations

White Gem

The blue car at the back of the garage has a Strobulb sensor. Flash it, and the White Gem appears

Red Gem

You’ll need to come back later with Gooigi for this one. To the left of the garage, where the utility area is, switch to Gooigi and squeeze through the iron barrier. Pull open the circuit box, then use the Strobulb. 

Blue Gem

Head to the car where you found the Poltergust. There’s a metal grate on the wall to the right. Use the plunger shot to remove it, then use Gooigi to slip through the metal floor grate.

Green Gem

You’ll see this one before you can actually get it. It’s in one of the washing machines in the laundry room Luigi first falls into. Once you have the plunger shot, come back and use it to open the machine.

Violet Gem

Use the Dark Light device on the painting outside the garage.

Gold Gem

This one’s a bit tricky unless you know where to look. Head up the stairs leading to the Lobby, and you’ll see the Gold Gem. What you can’t see, thanks to the camera angle, is the metal grate right above it. Switch to Gooigi at the top of the stairs, fall through the grate, and grab the Gem.

Luigi’s Mansion 3: Grand Lobby — F1 Gems

White Gem

To the left is a sitting area. You’ll notice an empty space in front of the window. Shine the Dark Light device there and suck up the orbs that appear to reveal a chaise lounge and a shining blue ghost. Defeat the ghost, and you’ll obtain the White Gem.

Red Gem

This one requires the plunger shot too. Head to the table below the large painting on the edge of the foyer, fire a plunger, and pull it back. This activates a gear mechanism that opens the painting, revealing the Red Gem.

Blue Gem

Go up the stairs, turn left, and roll up the carpet. Switch to Gooigi and drop through the floor grate. Move toward the screen, then use “ZL” and “ZR” to do a jump and blast the Blue Gem out of its hiding place.

Green Gem

You’ll see this one immediately as you enter the Lobby. It’s near the elevator, nestled in the sinister grip of a dead plant. Use the plunger shot to break the pot and obtain the Green Gem.

Violet Gem

Go behind the reception desk, and use the Strobulb on the cabinet in the back.

Gold Gem

Here’s another tricky one that’s easy to overlook. Near the front doors is a large chandelier, and underneath on the left or right, you may or may not notice two peculiar floor designs. These are switches. Pop Gooigi on one switch and Luigi on the other. Use the Poltergusts to rotate the chandelier and reveal the Gold Gem.

Luigi’s Mansion 3: Mezzanine — F2 Gems

Many of these aren’t available until you come back after clearing the Shops floor.

White Gem

When you come back to the Mezzanine after clearing the Shops floor, go into the men’s bathroom, and open the stall on the right. Pull the newspaper down to reveal another shining ghost, defeat it, and claim your White Gem.

Red Gem

This one involves another chandelier trick, but Luigi can do it himself. Rotate the chandelier in the Ballroom to open the doors on the left. Go inside and pick up the Red Gem.

Blue Gem

After you defeat the chef boss in the Kitchen, go into the freezer. Look to the left, and you’ll see a block of ice containing a Gem. Pull it out with the Poltergust, then carry it to the burners in the center of the kitchen to melt the ice.

Green Gem

Go to the Dressing Room (you can get to it the first time around), and pull the coats off the rack to reveal a safe. Use the Strobulb to open it, then claim your prize.

Violet Gem

This one’s in the games room. Pull a sword off the wall to the right of the billiards table using the Poltergust, then use “ZL” to launch it at the darts board to reveal the Gem.

Gold Gem

Here’s another hidden one. In the little foyer outside the dining room, you’ll see a sign. Destroy it with the plunger shot, and summon Gooigi. Use both Poltergusts to rotate the wall fans. It opens the light fixture above to release the Gold Gem.

Luigi’s Mansion 3: Hotel Shops — F3 Gems

White Gem

Go up the escalator in the shopping area, then turn right. Open the gate near the greenery using a jump blast, and keep following the path around. It’ll take you onto a ledge above the lobby, and you can keep following it until you reach a chest containing coins and the White Gem.

Red Gem

In the Heart shop is a mannequin sitting on a dresser to the left. Pull it with the plunger shot to open a secret passage, then open the chest to obtain the Gem.

Blue Gem

Outside the officer’s office is a vending machine. Use the Strobulb on it until the Blue Gem comes out.

Green Gem

Use the Dark Light outside the Diamond shop to reveal a ladder. Climb up, and follow the path to the end. You’ll find a chest containing the Green Gem.

Violet Gem

Here’s another toilet treasure for you. Go to the men’s bathroom on the first level, and use the Dark Light to reveal the floor grate you can see in the mirror.

Send Gooigi on his way under the women’s bathroom, turn the valve off to stop the flood above, then go back to the men’s restroom. Pull the wall grate off using the plunger shot, and send Gooigi through to obtain the Gem.

Gold Gem

This one is also in the Diamond shop. Use the trunks lying about to smash the glass case at the back containing the Gold Gem. Oops.

Luigi’s Mansion 3: The Great Stage — F4 Gems

White Gem

This one is with another shiny ghost. Go to the women’s restroom, use the Dark Light to reveal the missing faucets, and capture the ghost.

Red Gem

You can’t get this one until you defeat the floor boss. After you do that, go to the dressing room (right side of the stage), and use the Dark Light on the piano.

Blue Gem

Go to the men’s bathroom (on the right), and send Gooigi through the metal barrier to pull the toilet flusher. This opens the Boo door, which Luigi can use to get to the snack area. Hold “ZL” to blow the Poltergust on the bottles and open the safe. Snag the Gem (make sure your volume is up for this too).

Green Gem

This is one you can’t get until you receive a suction upgrade after Floor 12. Make your way back to the stage, and use the jump on the left side to reveal a socket. You can use the suction upgrade with the socket to rip the back wall off and uncover a ghost orchestra. Suction them or ignore them as you will, because the TV is your goal here. Enter it, follow the path, and obtain the Gem.

Violet Gem

It wouldn’t be a music floor if you couldn’t make some music. Summon Gooigi next to the horn outside the elevator, and use one Poltergust to blow into the mouthpiece. Use the other to suction the Gem when it comes up.

Gold Gem

Easy: use the Strobulb on the popcorn machine at the far end of the lobby.

Luigi’s Mansion 3: RIP Suites — F5 Gems

White Gem

Look through the telescope on E.Gadd’s balcony, then defeat the shiny ghost that pops up.

Red Gem

This is in Peach’s room, but you’ll need Gooigi to use the dual plunger shot and move the sofa. Then use the Dark Light to reveal the room door. Go onto the balcony and head right to find the Red Gem.

Blue Gem

Use the plunger shot to rip the vending machine out of the wall, then go inside. Pull the grate off the back wall to get the Blue Gem.

Green Gem

In the hallway with the sculptures, suck up one of the objects with the Poltergust, then launch it at the fixture between 505 and 506.

Violet Gem

This is in the room under construction, next to E.Gadd’s room. Go into the bathroom, go through the opening behind the main area, and clear everything out of your way to get to the Violet Gem.

Gold Gem

Go to Mario’s room, and use the plunger shot to remove the trolley so you can enter the bathroom. Send Gooigi under the floor via the grate, and turn the valve with the Poltergust. Then, switch to Luigi and use his Poltergust on the tub faucets. A yellow trunk pops out, and the Gold Gem is inside.

Luigi’s Mansion 3: Castle MacFrights — F6 Gems

White Gem

Go to the Coliseum balcony after defeating the boss, and walk along the pathway that has the suits of armor. The one on the left houses the White Gem for this floor.

Red Gem

This one is on Level 3, right inside the castle. Use the Dark Light to reveal the hidden suit of armor, then use the plunger shot to chuck it across the room and get the Red Gem.

Blue Gem

Go to the cellar on Level 2. Use the plunger shot on the barrel on the right, and go through the hidden opening on its right; work your way up the ladder to get the Blue Gem.

Green Gem

On Level 1, in the hallway outside the Coliseum, pull down the tapestry with the Poltergust, and use the Dark Light to reveal a hidden door. You’ll enter the Royal Coffers, where you can vacuum up a heap of gold and the Green Gem.

Violet Gem

In the Armory on Level 3, fire a plunger at the funky looking bricks and yank it back to activate a mechanism that raises the wall and reveals the Violet Gem.

Gold Gem

This one is part of the cage puzzle, where you need both characters in the cage room. Use Luigi to blow air at the propeller on the left wall, then use Gooigi to talk through the cage and grab the Gold Gem.

Luigi’s Mansion 3: Garden Suites — F7 Gems

White Gem

Go to the Ivy Bathroom on the third level. Uncover the hidden floor grate using the Dark Light device, and send Gooigi down. Use the Dark Light again to bring a pipe section back into existence. Use Luigi to turn the tub faucets, and the White Gem leaks down to Gooigi.

Red Gem

This one is in the Blooming Suite on the second level. Use the plunger shot on the side table to reveal a pipe, send Gooigi on his way, and flash the plant on the other side with the Strobulb.

Blue Gem

The Blue Gem is at the very top in the Atrium. There’s a hidden doorway in the back wall on the left. You can use the Poltergust to suck up the leaves and trash to make a pathway to the Blue Gem.

Green Gem

Head to the Mushroom Suite on the fourth level, and work your way to the other side of the bed so you can go under the floor. Send Gooigi through the pipe on the right, and flash the plant with the Strobulb.

Violet Gem

Go to the Blooming Bathroom (not the one with watermelons) on the second level. Vacuum up the leaves to reveal a grate, send Gooigi down the grate, and interact with the pipes to flush the Violet Gem out.

Gold Gem

This one’s easy: leave the elevator room on the first level, and use the Dark Light to uncover the Gem beneath a painting at the end of the hall.

Luigi’s Mansion 3: Paranormal Productions — 8F Gems

White Gem

On the Fire Set, interact with the bike basket to flush out another shiny ghost; defeat it to get the White Gem.

Red Gem

In the reception area (first room after the elevator), roll the red rug up to reveal a star pattern under the table, and the Red Gem will appear.

Blue Gem

Getting the Blue Gem is a multi-step process. First, go to the Backstage area, and put Luigi on the cherry-picker. Use Gooigi to raise the platform, then use the Poltergust to grab the ice block the Blue Gem is in.

Then, put the block in the TV set that’ll transport it to the Fire Set, where you can melt it and finally grab the Gem.

Green Gem

On the Micro Set, use Gooigi to squeeze into the bottle and claim the Green Gem.

Violet Gem

Right outside the elevator is a helicopter. Aim the Poltergust at it and hold “ZR” until a door opens and the Violet Gem pops out.

Gold Gem

In the reception room where you get the Red Gem is a rope next to a big film reel. Pull it with the Poltergust, and the Gold Gem will make itself known.

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That’s it for the first half of the game’s Gems. Hopefully, this guide helped you find all of the Gem locations in this part of the game. Check out part two of our Luigi’s Mansion 3 Gem guide here to see the Gem locations for Floors 9F to 15F.