List of All 102 Gem Locations in Luigi’s Mansion 3

Gem, Gems! These are one of the hidden materials that you need to discover in Luigi’s Mansion 3 game. These gems are so elusive and require players to collect all gems to complete the whole story.

There are a total of 102 gems scattered across the 17th floor of the Luigi’s Mansion. A challenging tasked that requires roaming each corner of the game. Each floor has 6 different gems and in a different color (White, Red, Blue, Green Purple, and Gold).

Table of Contents

• Floor B1: Basement Gem Location
• Floor 1: Grand Lobby Gem Location
• Floor 2: Mezzanine Gem Location
• Floor 3: Hotel Shops Gem Location
• Floor 4: The Great Stage Gem Location
• Floor 5: RIP Suites Gem Location
• Floor 6: Castle MacFrights Gem Location
• Floor 7: Garden Suites Gem Location
• Floor 8: Paranormal Productions Gem Location
• Floor 9: Unnatural History Museum Gem Location
• Floor B2: Boilerworks Gem Location
• Floor 10: Tomb Suites Gem Location
• Floor 11: Twisted Suites Gem Location
• Floor 12: The Spectral Catch Gem Location
• Floor 13: Fitness Center Gem Location
• Floor 14: The Dance Hall Gem Location
• Floor 15: Master Suite Gem Location

In this guide, we will help you locate each of them that you might forget getting it.

You may also watch this YouTube video from BeardBear which locates all of the gem.

Floor B1: Basement Gem Location

In the basement floor of Luigi’s Mansion, this is where you collect your very first gem the game.

Gems	Locations
White Gem	You can find the first gem on the left portion of the E. Gadd’s vintage car. You need to vacuum the cover shit to reveal the green blinking light. Use a flashlight’s Strobulb to light the trunk, it will automatically open and the gem will appear.
Red Gem	In the parking lot, go to the left side. Use the Gooigi so you can walk in the meshed area. Look for a breaker box on the left portion of the parking lot, use the Gooigi’s plunger to the breaker box. It will show the blinking green light, use the flashlight’s Strobulb to reveal the gem.
Blue Gem	In the right corner of the Parking lot, look for a metal panel on the upper right corner. Use a plunger to remove the panel and go inside. From here, you need to get into the ladder and the blue gem is on just above.
Green Gem	Go to the Laundry Room, then there will be 3 washing machines. Use your Gooigi’s plunger to the middle washing machine, you can then pull the rope with your vacuum to reveal the gem inside the drum.
Violet Gem	Find the Service Hallway, then you’ll see a vertical painting. Use the Poltergust’s Dark-Light device on it to reveal the next gem.
Gold Gem	Find the Service Stairwell, just below the upper stairway, you’ll see the Gold Gem, use the Gooigi drop to jump through.

Floor 1: Grand Lobby Gem Location

In the first floor, this will be your first time getting a gem from fighting a hidden ghost on a sofa.

Gems	Locations
White Gem	Go to the Lobby, west portion of the grand lobby. Then you’ll see a big window. Use the Poltergust’s Dark-Light Device below the window and it will show a hidden sofa. A ghost will appear right after, you need to catch the ghost to reveal the gem.
Red Gem	At the right corner of the Lobby, Use the plunger at the Big Hotel Frame on the table and pull it out. It will then reveal the red gem.
Blue Gem	Find the stairway in the left of the lobby and you’ll find a red carpet above. Use the Blow air to the carpet to roll it up, this will reveal the gem.
Green Gem	Right corner of the lobby, find the elevator. The next gem is trapped inside a plant. Use plunger to the plant, walk backward and smash it to reveal the gem.
Violet Gem	In the lobby, find the main reception desk. Use the flashlight’s Strobulb at the blinking green light to open the secret storage and reveal the gem.
Gold Gem	In the reception lobby, you’ll find a two floor-switches on the floor. Use Luigi and Gooigi to step on the floor switch, then this will lower the chandelier. Use the Poltergust’s suction on both Luigi and Gooigi at the Chandelier to rotate it, this will dislodge the coins and reveal the next gem.

Floor 2: Mezzanine Gem Location

In the second floor, it involves defeating a boss in a kitchen and a hidden ghost inside the comfort room.

Gems	Locations
White Gem	Find the men’s restroom on the right corner. Inside, open the door on the third stall with Poltergust’s plunger. It will reveal a newspaper, use the Poltergust’s suction to grab the newspaper and a ghost will appear. Defeating the ghost will reveal the gem.
Red Gem	In the ballroom, where you’ll find the E.Gadd trapped inside the painting. There is a chandelier above, use the Poltergust to blast the Chandelier and it will open the door on the left corner. Head inside the room to get the gem.
Blue Gem	In the kitchen, you need to defeat the Chef Ghost Boss to go inside it. Use the suction to open up the metal door, then it will show the freezer room. Inside, there is a block of ice that contains the gem. Pick it up with your Poltergust pick and put it on the grilling station in the kitchen, it will melt down and reveal the gem.
Green Gem	Find the Dressing Room, you’ll find a red uniform and a white coat on the left corner. At the back of the coat, there is a safe. Use the flashlight Strobulb at the safe to reveal the next gem.
Violet Gem	Find the entertainment room, then take the sword on the right wall near the Billiard table with Poltergust’s suction. The sword will connect to your Poltergust, then use it to reach and hit the dart. It will then reveal the gem.
Gold Gem	At the Easy Wing of the Hall Way, there are two fans on both sides in the left and right corner. Use both Luigi and Gooigi and use the plunger at the fan to reveal the gem.

Floor 3: Hotel Shops Gem Location

In the third floor, it envolves sneaking inside the locked dress shop and sweeping a vending machine.

Gems	Locations
White Gem	Find the escalator, and reach the top, on the right front side corner, there is a secret passage going to the balcony of the first floor. Go to the ledge and you’ll find the gem on the right corner.
Red Gem	Find a locked dressed shop, use the Gooigi to enter the shop, then on the left corner there is a mannequin display, use the Poltergust’s plunger on the chess and it will reveal a door behind the mirror. Enter the door and open the chess to get the gem.
Blue Gem	Find the vending machine on the second floor, outside of the mall cop’s office. Use the flashlight Strobulb at the blinking green light of the vending machine and it will reveal the gem. If you accidentally destroy the vending machine, you need to reset it. Go to another floor and return to respawn in again.
Green Gem	Just outside the dress shop, there is a hidden ladder. Use the Poltergust’s Dark-Light device to reveal the hidden ladder on the left corner. Enter the ladder and on the right corner of the ledge, you’ll find the gem in the chest.
Violet Gem	Find a restroom at the righthand corridor of the first floor. Enter the men’s restroom. If you’d like to get the gem immediately, you can just pull the metal pipe on the left corner of the restroom to enter the ladies’ restroom. The gem is on the left cubicle. There is a hidden underground pass on the left corner of the men’s restroom. Use the Poltergust’s Dark-Light Device to reveal the metal pipe. Send Gooigi to enter the metal pipe, go to the left corner and you’ll find a valve
Gold Gem	Inside the dress shop, use Gooigi to enter it. Then use the object you’ll find on the corner to smash the cabinet. Once cracked open, you can now get the gem.

Floor 4: The Great Stage Gem Location

In the fourth floor, some of the gems require you to finish the other floor. You may skip some of the gems here and go back when you’ve finished those.

Gems	Locations
White Gem	Find the restroom on the left corner, then look for a mirror, there is a hidden empty sink on the right side of it. Use the Dark-Light Device to hit the empty sink, it will show the hidden ghost. Defeat the ghost to show the gem.
Red Gem	After defeating the fourth boss, exit the stage and enter a dressing room. There is a piano on the left corner, use the Dark-Light Device to the piano to repair it and it will reveal the next gem.
Blue Gem	Find the men’s rest room, then send Gooigi behind the folding barrier on the right corner. Then pull the gold like bell. This will allow you to open the secret Big Ghost door on the right corner. Enter to that door and use blow air to the bottle from left to right to open the safe.
Green Gem	Only available after reaching Floor 12. Use the Super Suction upgrade from E.Gadd to the TV. Enter the TV and it will allow you to teleport to the orchestra. The gem is just on the corner of the balcony.
Violet Gem	Find a brass horn on the right corner near the elevator. Use Both Luigi and Gooigi and use Poltergust’s Suction to get the gem.
Gold Gem	Find the Popcorn stand on the left corner and use the flashlight’s Strobulb to the flashing green light to reveal the gem.

Floor 5: RIP Suites Gem Location

In the fifth floor, E.Gadd’s suites are located here in which you’ll able to use a telescope to view the scenery of Mario’s world.

Gems	Locations
White Gem	On the balcony of E.Gadd’s suite room, find the telescope and look at the scenery. The ghost will appear and you need to defeat it to get the gem.
Red Gem	Inside E.Gadd’s suite, just on the right corner. There is a pile of pink luggage at the corner near the bed. Use the Dark-Light Device to reveal the door, then use the plunger to remove the blocking luggage. On the balcony, find the Gorgoyle which is holding the gem.
Blue Gem	Find the vending machine near the elevator, use plunger to fire at the white circular pattern and pull to destroy the vending machine. It will then reveal a hidden door to the laundry Room. Inside the laundry room, there is a panel on the left corner and use the plunger to get the blue gem.
Green Gem	In the northern hallway, you’ll find a lot of sculptures, find a brownish ball metal sculpture and use the Poltergust’s suction to bring it alongside. Then at the next sculpture, fire the golden ball metal sculpture to smash it and it will reveal the gem.
Violet Gem	In Room 507 bathroom, next to E.Gadd’s suite. There is white cloth covering an opening on the left corner, vacuum it up and enter inside. Once entered, vacuum the blocking furniture and walk through to get the gem.
Gold Gem	At the 502 Bathroom, there is a bathtub and a curtain, remove the curtain by vacuuming it up. Then blow some air at the faucet in the right corner of the bathtub. Then use Gooigi to enter the Drainage. Then down below, use a plunger to remove the wooden board covering the valve. Turn on the red valve to stop the water and enter to open the chest.

Floor 6: Castle MacFrights Gem Location

In the sixth floor, a coliseum floor where lots of ancient armory you can encounter.

Gems	Locations
White Gem	Go to the Coliseum Balcony after defeating the boss. Find an armor laying on the corner and shake it or vacuum it up. It will reveal the gem.
Red Gem	At the Hall of Armor, use the Dark-Light Device on the right corner to reveal the hidden armor. Then use plunger at the chest and smash it to the ground to get the gem.
Blue Gem	Find the Cellar and you’ll find a lot of large barrels. Get into the most right corner and last barrels, use a plunger to open it. It contains a lot of rats, inside there is a whole going to the next barrel and a ladder. Climb it to get the gem on the top right corner.
Green Gem	At the Royal Coffers, you can go here via Coliseum Hallway. There is a wall covered with a clothing poster of a king-like, vacuum it up to reveal the empty wall. Use Dark-light device to reveal the hidden door. The door will lead you to the gem.
Violet Gem	In the Armory, find different colored and patterned bricks, you can find it at the center rear wall. Use a plunger to pull the breaks and it will reveal chess. Open the chess to get the gem.
Gold Gem	At the Cage-Life room, you’ll see a hanging cage above with the gem. You can lower this hanging cage by blasting air to the propeller on the left side corner. Use Gooigi or Luigi to get the gem.

Floor 7: Garden Suites Gem Location

In the seventh floor, you’ll be able to encounter plants and ivies and the monstrous eating plant.

Gems	Locations
White Gem	Go to the left-most corner of the Ivy Bathroom, in the bathtub stream sum air at the faucet until the water overflows the bathtub. Then on the left corner in front of the bathtub, there is hidden drainage in the area. Use the Dark-light Device to reveal it. Once found, send Gooigi to the underground drainage and to the most right corner use flashlight Strobulb on the sunflower to reveal the gem.
Red Gem	Inside the Blooming Suite, go to the rightmost corner and you should see a table besides a bed full of vases. Use a plunger to the table targeting the golden circle. It will create a hole and use Gooigi to go inside, transporting to the top area of the bed. Use flashlight Strobulb to the plant to reveal the gem.
Blue Gem	At the Atrium, passing the monstrous eating plant will allow you to reach the other side going to the next gem.
Green Gem	At the Mushroom Suites, there is like a blue pathway inside a an empty bed canopy. Use the vacuum to remove the red curtains. Enter the underground pathway and inside the underground, there is a golden circle on the right corner. Use Gooigi to enter the tunnel, then use the flashlight Strobulb to the plan to get the gem.
Violet Gem	In the Blooming Bathroom, clear the piles of petals in both bathtub and in the left corner you’ll find an hidden drainage. Once the drainage is revealed, use Gooigi to send it down over. Find the Wooden board and use a plunger to remove it. Vacuum the area until you find a hole going back to the bathtub.
Gold Gem	Just on the right corner of the hallway of the Garden Suites, find the last framed painting in the corner, then use your Dark-Light device to it to reveal the gem.

Floor 8: Paranormal Productions Gem Location

In the eighth floor, is a set for films and lots of backstages where Luigi probably has fun and scared as well.

Gems	Locations
White Gem	Find a bicycle in the Studio 3: Fire Set and pull the cloth covering the basket. A ghost will appear, defeat it to get the gem.
Red Gem	In the lower-left corner of the Studio Entrance Reception Area, There is a plant tree on the left-most corner, use Poltergust to move the plant and smash it. Then move at the most left corner, then blow air to the rug to reveal the star pattern. It will then reveal the gem.
Blue Gem	In the Backstage, go to the leftmost corner and you’ll find an orange moving elevator. Use Gooigi to blow some air at the valve of the moving elevator and it will elevate Luigi. At the scaffolding, just walk until you reach the block of ice. Blow some air to the block of ice to make it fall to the ground. Then jump off at the scaffolding to the ground as well. Now, use Poltergust to move the ice and burn it on the burning lamp on the corner near the TV to melt it down and reveal the gem.
Green Gem	At the Studio 4: Micro Set, find a bottle and use Gooigi to go inside to get the gem.
Violet Gem	At the Elevator Hall, there is a hanging helicopter in the left corner, use the vacuum Poltergust to it and the helicopter’s door will open enabling you to get the gem.
Gold Gem	At the Studio Entrance, go to the right side corner. You’ll find a Film Reel at the bottom and a frame. Use Poltergust at the bottom Film Reel. Then use Gooigi to enter inside below the Film Reel Frame and grab the gem.

Floor 9: Unnatural History Museum Gem Location

In the ninth floor, Luigi will see different historical display and ghost hidden on a bones dinosaur.

Gems	Locations
White Gem	After defeating the boss on this floor, find a display cabinet and smash it on the southeast corner of the elevator hall. It will reveal a ghost and you need to defeat it to get the gem.
Red Gem	At the Elevator Hall, use Poltergust to blast some air to the swiveling chair behind the reception desk. It will spin up-side-down and reveals a chest. Open the chest to get the gem.
Blue Gem	Still, on the Elevator Hall, find a Fossil Dinosaur display in the area, and on the right corner, there is a strange violet-colored plant. Vacuum those violet plants to reveal the blinking green light. Then use flashlight Strobulb to the blinking green light to reveal the safe inside the Fossil Dinosaur display. Fire flashlight Strobulb into the safe to open it.
Green Gem	At the Elevator Hall, find a hanging flying Dinosaur Bone in front of the Elevator. Then you can use the Mini Mushroom or any Dinosaur Bone as a bullet to smash the hanging flying Dinosaur Bone. Vacuum Mini Mushroom or any Bones and hit the hanging flying dinosaur Bone at the ceiling. Destroying it will show the gem.
Violet Gem	At the Elevator Hall, find a smashable display in the leftmost front corner. Then you can use Mini Mushroom as a bullet to smash the display. Vacuum Mini Mushroom and point it to the display. Then use the Dark-Light device at the broken display to reveal the gem.
Gold Gem	There is a smashable display in the right corner of the Elevator Hall, you can use Mini Mushroom as a bullet to smash the display. Vacuum Mini Mushroom and fire it up to the display.

Floor B2: Boilerworks Gem Location

In the second basement, the steampunks theme floor where Luigi pass through the different green pipes to get the gem.

Gems	Locations
White Gem	This will be available after reaching Floor 12. Inside the Old Reservoir, use the vacuum to scatter the paint in the upper left corner of the map. Doing this will reveal the ghost, defeat it to get the gem.
Red Gem	Inside the Storage Room, there are a red valve on the top. Vacuum the area until the Valve lights on. Then remove the blocking Yellow Utility cart. The use Gooigi, to enter to the left green pipe. Then once in the entered to the left corner of the storage room, enter the green pipe again, and it should proceed to the underground. There is a water flash blocking the way, to remove it, go back to Luigi and blow some air until the Red Valve turns off. The water should stop flowing now, Gooigi can now get the Red Gem on the left corner.
Blue Gem	At the Observation room, go the left front corner of the room and you should see a missing object connecting to the small pipe in the table. Use the Dark-Light Device to reveal the object. Then on the control panel, there is a blinking yellow light at the right corner. Use flashlight Strobulb to it to activate the hot water dispenser. The bottom of the control panel will then explode revealing the next gem.
Green Gem	At Sewer B, Use Gooigi, then place him at the elevator pad in the right corner. Go back to Luigi and vacuum the black circle orb on the right corner of the elevator to pull it out. It will then elevate the elevator. Use back Gooigi and get the gem.
Violet Gem	At Sewer C, there is like a periscope that appears in the ground. Use plunger at the periscope lens and pull it out. This will create a hole pipe, send Gooigi on it. Then inside the submarine, find a fire canister, then vacuum it out to bring along. Then put the fire directly to the stove, once it boils, it will show the gem.
Gold Gem	In the Elevator Hall, find a room that is filled with pipes. There is a curtain covering a center green pipe. Use a vacuum to remove it. Then you can send Gooigi to enter the green pipe and allows you to enter through the pipes. The gold gem is just on the upper left corner.

Floor 10: Tomb Suites Gem Location

In the tenth floor, mummies, an egyptian theme floor where you’ll encounter different mummies ghosts and solving a snake pieces to get the gem.

Gems	Locations
White Gem	At the rightmost corner of Central Chamber, find the sarcophagi or a coffin near the door. Then use a plunger to smash open it. It will contain another smaller coffin inside, use plunger again to open it. Finally, the last smaller coffin will show, use a plunger again to break it and it will show the ghost. Defeat it to get the gem.
Red Gem	At the elevator hall at the end of its corridor leading to the snake statue. Pull the tail of the snake with Luigi or Gooigi, then the other character will vacuum the statue. Eventually, the snake statue mouth will open and reveal the gem.
Blue Gem	At the Jewel Chamber, find a pink vase or pot at the corner of a statue. Use a plunger to smash it. It contains some kind of a lighting brick, vacuum it to bring alongside. Just inside the entrance of the chamber, there is a socket for the lightning brick. Point it to the socket and fire it up. It will then open up an secret storage containing the gem.
Green Gem	At the Scale Chamber, where you’ll be matching various animal statues. After completing the tasked, you just have to vacuum the sands towards the left corner of the room to find drainage. Send then Gooigi to go down and get the gem inside.
Violet Gem	In the left portion of Sandy Grand Hall, you need to vacuum all of the sand in this area or specifically the elevated sand. Once you’ve vacuum the correct spot, you’ll get the gem.
Gold Gem	In the right portion of Sandy Grand Hall, there are some kinds of fossil laying on the ground, vacuum it up and it will reveal a snake shape formation. Find the part of the snake formation that is missing. There are two missing parts when you find one use the Dark-Light Device on the missing piece to restore the part. Once you’ve found the two missing parts and restore everything. The gem will be thrown at the mouth of the snake fossil.

Floor 11: Twisted Suites Gem Location

In the eleventh floor, a magician themed where it involves solving cards and discovering hidden stairs to get a gem.

Gems	Locations
White Gem	Inside the Suit Bathroom, this one is very tricky. You need to find 6 playing cards inside the room to get the gem. Use the vacuum to collect those cards. Here are the locations of the cards: – Front camera at the bathtub – On the bath rug – On the cabinet – Laying at the ledge of the window – Above the toilet, at the dagger – Laying at the ledge of the Mirror
Red Gem	Inside the Bladed Bedroom, just direct a stream of air at the carousel and the dagger will be thrown and eventually received the red gem.
Blue Gem	Inside the Trainer’s Bedroom, there is a piggy bank on the upturned chair in the left-most corner of the room. Vacuum the piggy bank and smash it to reveal the gem.
Green Gem	Inside the Lounge, the green gem is placed inside a glass display at the left-most corner. You need Gooigi to vacuum the left corner where the gem is located, then Luigi will go to the right side corner near the vending machine. Use a plunger to remove the gray panel cover and use Strobulb at the green blinking lights to open the cabinet on both the left and right sides of the room temporarily. While Luigi is at rest, go back to Gooigi and do the vacuum on the left corner of the cabinet, it will pull-out the gem automatically.
Violet Gem	While inside the Hall, as you’re wearing a big Hat, smash the hat at the three magician statue and it will reveal magical stairs. Take the stairs and you’ll find a chest, open it to get the gem.
Gold Gem	Inside the Mirror Bathroom, use a Dark-Light Device and point it towards the game screen camera. It will show the next gem.

Floor 12: The Spectral Catch Gem Location

In the twelveth floor, a night in a bay theme where Luigi’s requires to pick a fight with a mermaid to get a gem.

Gems	Locations
White Gem	In Grotto Lounge, go to the left corner, then you’ll find a crate and a skull on the top. Use the Dark-Light Device to reveal the pulley system at the crate. Use the plunger to pull the rope and reveal the gem.
Red Gem	In the Beach, there is a small island with a statue of a mermaid. Use a Vacuum to pick a coconut from the tree, then throw it to the statue. Once hit, it will reveal a ghost and you need to defeat it to get the red gem.
Blue Gem	In Elevator Hall, Once you already have the E.Gadd upgrade that gives Luigi a super suction ability. Rip up the floor to reveal the red trail that leads to an X mark near the reception desk. Stomp on the X mark to get the rewards.
Violet Gem	In the Beach, Use the Dark-Light Device on the right-most corner of the beach and it will reveal a bridge leading to the tiny island where the gem is located.
Green Gem	After getting the Violet Gem, on the small island, just use the Dark-Light Device on the top of it to reveal the next bridge. Once you reach the island with a coconut tree, use a vacuum to pull the sands and it will reveal a chest containing the gem.
Gold Gem	In the Elevator Hall, there is an indestructible metal ball on the shelf on the reception desk. Pick this up using Poltergust, then move to the most right corner then smash the three hanging balls decoration. One of the hanging balls contains the gem.

Floor 13: Fitness Center Gem Location

In the thirteenth floor, a fitness gym themed where Luigi’s needs to weight his body to reveal the hidden gem.

Gems	Locations
White Gem	In the Gym Lobby, go to the Reception desk and use the Dark-Light Device to reveal the bell in the table. Use it to create sound. After that, walk to the exit and Luigi will be shocked as the bell replies. Return back to the bell and ring it again. A ghost will appear, and you need to defeat it to get the gem.
Red Gem	In the Weight Room, go to the weighing machine on the right-most corner. Stand on it to reveal a secret panel, you can see it from the mirror in the gym, revealing the red gem. Use the Gooigi to get the gem.
Blue Gem	In the Locker Room, go to the left corner and you’ll find a variety of sports equipment on the shelves. Find the green boxing glove and throw it to the sign below the light to get the blue gem.
Green Gem	In the Shower Room, defog the room with Poltergust, then defeat the ghost to turn off the showers. Send Gooigi down to get the gem on the right corner.
Violet Gem	In the Training Room, turn on the radio using your flashlight’s Strobulb, proceed downstair to see the ghost. Defeat them to get the gem.
Gold Gem	In the Elevator Hall, you’ll find a dumbbell emblem on the floor. Step on the emblem to open the glass cabinet storage. While the emblem is lifted down, let Gooigi stand on the emblem while Luigi getting the trophy in the cabinet using the vacuum.

Floor 14: The Dance Hall Gem Location

In the fourteenth floor, a dance groove theme floor where Luigi’s needs to destroy a whole stage to discover the hidden backstage and eventually get the gem.

Gems	Locations
Blue Gem	In the Dance Floor, Plug your Poltergust to the socket on the dance floor area. Then destroy the speakers and stage on the front. This will open a hole to the stage revealing the backstage, enter the backstage and on the right corner vacuum the red wigs and you’ll get the blue gem.
White Gem	In the Backstage, there is a an album frame on the wall. Find the yellow one and use the flashlight Strobulb to turn on the ladder for both the left and right balcony of the dance floor. Go to the left balcony of the dance floor, then use the Dark-Light device to the left-most front and it will reveal a table. It will show a ghost that you need to defeat to get the gem.
Red Gem	Since the balcony for both left and right are now open, use Luigi and Gooigi to blast air to both framed DJ Turntable at left and right. This will make the ball at the Dance floor to shatter revealing the gem.
Green Gem	Inside the Cloakroom at Elevator Hall, vacuum every cloth inside to find the gem.
Violet Gem	At the Elevator Hall, there is a DJ turntable frame on the leftmost corner. Blow air at these DJ turntable using Luigi, and use Gooigi to Stamp below the moving blocks on the wall. Eventually, the gem will drop from the blocks.
Gold Gem	In the Elevator Hall, there is some kind of illuminated floor outside the elevator. You need to walk to the tiles and turn on all of the lights. But some lights will turn off, use Gooigi and Luigi to turn it in on again until all of the lights are turned on. It will open up a stairway going to the vault. Use Gooigi to enter the vault and get the gem.

Floor 15: Master Suite Gem Location

In the fifteenth floor, it involves solving a shadow and abstract puzzle to discover the hidden gem.

Gems	Locations
White Gem	In the Hallway, at the bottom left corner, there is a purple sculpture and an abstract painting behind it. This is a puzzle, you need to solve the puzzle by matching the sculpture shadow on the outline object in the painting. Use air to rotate the sculpture, once you’ve find a match. It will proceed to the next puzzle which is Luigi’s outline. Rotate again until you’ve found the match. After doing this, you’ll get the White Gem.
Red Gem	In the library, after you deactivated and dodges all of the lasers. Go to the left door and you’ll find a brown book below the table. (Note: Not the opened book in the corner) You need to take the book below the table, then go to the upper level, take the stairs in the right corner and place it on the missing book in the shelfs. Once placed correctly, it will reveal the next gem.
Blue Gem	In the Master Bathroom, after passing the laser obstacle, there is a running shower in the upper right corner of the room and a drainage. Use your Poltergust to turn off the shower and send over Gooigi on it and just follow the path until you’ve reach the green pipe hole. Enter the pipe and you’ll able to get the gem on the upper portion.
Green Gem	In the Lounge, there is two coffee table on the left and right corner in front of the Cinema Screen. Use Luigi or Gooigi to stand on both of the coffee tables. It will sunken the area and reveal the next gem.
Violet Gem	In the Lounge, go to the upper left corner of the room near the Cinema Screen. There is a green pipe hole on the upper left corner. Send Gooigi over and it will be transported to the top of the shaft. Follow the coins and behind it, there is a hole passage going down to the shaft. Once you’ve dropped to that hole, you’ll get the violet gem.
Gold Gem	Lastly, in the Master Bedroom, there is a final puzzle that you need to solve, by balancing the giant see-saw. This is a little bit challenging and we challenge you to use your own strategy to solve this last piece. But a hint, you need to use Gooigi to get the Gold gem on the top as Luigi cannot enter to the cell.