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Gemstones are very well hidden special collectibles in Luigi's Mansion: Dark Moon and Luigi's Mansion 3.

Luigi's Mansion: Dark Moon[]

There are five different types for each mansion. Amethysts are in the Gloomy Manor, Emeralds appear in the Haunted Towers, Rubies are in the Old Clockworks, Sapphires are in the Secret Mine, and Diamonds are in the Treacherous Mansion. Each is hidden very well, and the player must have a keen eye to spot clues to where they are. For each mansion, there are 13 different gemstones, each with a different shape. Collecting all the gems will unlock a special statue of Luigi for the player to admire. It's decorated with the gems that were collected.

The locations for each are recorded below:

Gloomy Manor[]

Shape Image Missions Available Room Obtaining
Circle
Lmdmgems1
All Mudroom Exterior Use the Poltergust 5000 to take it down from the tree.
Triangle
Lmdmgems2
All Front Yard Use the Strobulb to make the flower in the middle of the patch to the left of the staircase bloom. It will give the gem.
Rectangle
Lmdmgems3
All but A-1 Parlor Use the Strobulb on the clock.
Football
Lmdmgems4
All but A-1 Studio Looking through the camera will let the player see the gem through the mirror. Aim out the window and suck it up.
Tear
Lmdmgems5
A-3 and Bonus Entrance Check the suit of armor on the right to make it's head fall off. Suck up the helmet and shoot it at the painting of a knight head. It will open up and make a gem appear.
Stone
Lmdmgems6
A-3, A-4, A-5, and Bonus Dining Room Find the safe at the right side of the room on the ceiling and use the Strobulb on it.
Rhombus
Lmdmgems7
A-3, A-4, A-5 and Bonus Kitchen Open the fridge to reveal the gem encased in ice. Then check the furnace to start a fire. Suck up the ice block and move it over to the fire, freeing the gem.
Star
Lmdmgems8
A-3, A-4, A-5 and Bonus Foyer In the Patio, go left and use the Dark-Light Device on the wall, revealing a door to Under the Stairs. Go though the next door to end up on the other side of the fish tank, allowing access to collect the gem.
Emerald Cut
Lmdmgems9
A-3, A-4, A-5 and Bonus Patio Use the Dark-Light Device to reveal the third fountain that's next to the other two.
Oval
Lmdmgems10
A-4, A-5 and Bonus Library Reveal the globe at the left side of the room. Suck it up and shoot it out for the gem.
Spindle
Lmdmgems11
A-2, A-3, A-4, A-5 and Bonus Study Suck up the curtains on the back wall to uncover a painting of the gem. Use the Dark-Light Device to make it a reality.
Coffin
Lmdmgems12
A-5, and Bonus Rafters Go to the lower-right corner of the room, with the dresser. The gem is in plain sight, resting atop the dresser.
Mushroom
Lmdmgems13
A-5, and Bonus Bedroom Burn the webs with the spider web. Go behind the covers to obtain the final gem.

Haunted Towers[]

Shape Image Missions Available Room Obtaining
Circle
Lmdmgemsht1
All Tower Lobby Walk behind the stairs to find and obtain the gem.
Triangle
Lmdmgemsht2
B-1 and Bonus Laboratories Use the Balloon Berries to fly down into the glass chamber from the floor above.
Rectangle
Lmdmgemsht3
B-2, B-3, B-4, B-5, and Bonus Garden Fill up a bucket with water, and water the flower on the right side of the Garden. It will reveal a gem.
Football
Lmdmgemsht4
B-2, B-3, B-4, B-5, and Bonus Botany Lab Fill up the bucket in the room with water, and water the plant in the back of the room. It will reveal a gem.
Tear
Lmdmgemsht5
B-2, B-3, B-4, B-5, and Bonus Seedling Laboratory After clearing the room, use the potato shooter to shoot the mouse carrying the gem, then collect your reward.
Stone
Lmdmgemsht6
B-3, B-4, B-5, and Bonus West Garden Reveal some pipes using the Dark-Light Device on the stairwell of the Tower Lobby, and then reveal a door on the left side of F1 in the Tower Lobby. Use the hitchhiker plant to kill the Carnivorous Plant. Open the chest.
Rhombus
Lmdmgemsht7
B-3, and Bonus Hollow Tree Use the cobwebs to burn your way through the left tunnel. Take the bucket from the left and fill it with water. Then go right to water the plant. Use the Strobulb for your reward.
Star
Lmdmgemsht8
B-3, B-4, B-5, and Bonus Old Graveyard Take it down from the tree branch it sits upon, just before the main part of the graveyard.
Octagon
Lmdmgemsht9
B-4, and Bonus Skybridge Defeat the Orange Flowers to get the gem.
Oval
Lmdmgemsht10
B-4, and Bonus Rumpus Room Walk around the doll counter-clockwise to pop its head off and find the gem.
Spindle
Lmdmgemsht11
B-4, B-5, and Bonus Solarium Use the Dark-Light Device to reveal a chest on the table. It contains the gem.
Coffin
Lmdmgemsht12
B-4 Conservatory (Luigi's Mansion 2) Using a Balloon Berry to fly to a balcony to the right, use the Dark-Light Device to uncover a door. Go in the door and beat the challenge to earn a gem.
Mushroom
Lmdmgemsht13
B-4, B-5, and Bonus West Bathroom Defeat all the ghosts and pull on the toilet paper to the left.

Old Clockworks[]

Shape Image Missions Available Room Obtaining
Circle
Lmdmgemsoc1
All Clockworks Court Go far right and use the Dark-Light Device on the tool box containing a gem.
Triangle
Lmdmgemsoc2
All Warehouse Use the Dark-Light Device to reveal a green barrel on the boxes. Use the machine in the room to reveal the gem.
Rectangle
Lmdmgemsoc3
All and Boss Clock Tower Gate In the top-left corner of the room, use the Dark-Light Device on a tool box containing a gem.
Football
Lmdmgemsoc4
All but A-1 Storm Cellar Suck up the sheet in the bottom-left, and use the Dark-Light Device on the painting.
Tear
Lmdmgemsoc5
All but A-1 Canyon Stairs There is a ruby stuck in a web that you'll see as you go up.
Stone
Lmdmgemsoc6
All but A-1 Quarry Pull the mine cart so that Luigi can go into the tunnel behind it. This will lead to several Golden Bats and the gem.
Rhombus
Lmdmgemsoc7
C-3 Clockmaker's Chambers Suck up the rug to find a gear. Use the gear to turn the clock to 9:00, which will wake up the ghost holding a ruby. Defeat it to get the gem.
Star
Lmdmgemsoc8
C-3, C-4, C-5 and Bonus (Upper) Roundhouse Walk along the rightmost beam, on the balcony of the Roundhouse. walk around the corner to find a chest with a gem.
Octagon
Lmdmgemsoc9
C-3, C-4, C-5 and Bonus (Lower) Roundhouse From the stairs leading to the (Upper) Roundhouse continue going left into a secret area with a gem.
Oval
Lmdmgemsoc10
C-5 Gear Chamber Go across the boxes on the right side of the bottom part of the room, revealing a bridge along the way. Go into the hidden door and complete the challenge to get a gem.
Spindle
Lmdmgemsoc11
C-5 and Bonus Maintenance Hub Use the hipline to fall into the bottom of the room. Reveal a chest in front of the giant gear. The gem is inside.
Coffin
Lmdmgemsoc12
C-5 Service Elevator After getting Toad, launch him towards the screen. He'll collect some Secret Mines
Mushroom
Lmdmgemsoc13
Boss and Bonus Movements Walk to the window on the left and vacuum for a gem.

Secret Mine[]

Shape Image Missions Available Room Obtaining
Circle
Lmdmgemssm1
All Smokehouse Use the Dark-Light Device to reveal a scarf on the wall, then pull both of them off.
Triangle
Lmdmgemssm2
All Fishing Hut It's hidden in the bottom-left. The player can see it from the hole outside the hut. Use the Poltergust 5000 there to get it.
Rectangle
Lmdmgemssm3
D-1 Under the Ice Shoot Toad into the wooden shaft after riding the first air geyser.
Football
Lmdmgemssm4
All High Wires Use the zip lines to cross the first chasm, and take the gem down from the bird's nest.
Tear
Lmdmgemssm5
All Airway Look through the binoculars at the entrance to the Terminal. Look for the dark cave and you'll see a bat go from the cave and drop the gem into a barrel. Go collect it afterwards
Stone
Lmdmgemssm6
All but D-1 Chalet Approach Outside to the left of the entrance is a stove, with a chicken on top. Light the stove and use the flaming chicken to melt the ice around a painting outside. Use the Dark-Light on the painting, and collect the gem.
Rhombus
Lmdmgemssm7
All but D-1 Prospector's Crossing On the lower left wall is an axe that is hidden with Spirit Balls. Uncover it with the Dark-Light (there is a hidden arrow pointing to it in the ice). Use the Poltergust 5000 on it to find two logs. Put both on the ice to break it, and collect the gem that was inside.
Star
Lmdmgemssm8
All but D-1 Skip Slope While sliding down be prepared to go to the left. There will be a big spinning wheel blocking a path to a gem. The player must slide through one of the holes in the wheel to get it. This may take a couple of tries.
Octagon
Lmdmgemssm9
All but D-1 Shaft Pull the chain at the bottom of the Shaft, then climb back up to a hatch that was previously closed. The gem is inside.
Oval
Lmdmgemssm10
All but D-1 Deep Hall Light a piece of coal, and look up. There should be a gem encased in ice above. Shoot the coal at the ice to melt it and make the gem fall to the ground.
Spindle
Lmdmgemssm11
D-3 and Bonus Crossroads Go to the left side and find the missing minecart with the Dark-Light Device. Quickly go over to the right side to capture the Spirit Balls. Return to the left side to find the gem hidden in the snow.
Coffin
Lmdmgemssm12
D-3, and Bonus Chalet Go to the very bottom of the mine, in the Crystal Quarry. In that room there should be a portal that can be activated with the Strobulb. Go though and you'll end up in the Chalet. Luigi will land on a chair, knocking the gem from its hiding spot.
Mushroom
Lmdmgemssm13
D-3 High Wires Use the coal shooter to melt the ice on the tree. Go cross the tree to an outhouse. Go inside and hit the three Hiders with snowballs to win a gem.

Treacherous Mansion[]

Shape Image Missions Available Room Obtaining
Circle
Lmdmgemstm1
E-1 and Bonus Underground Lab After turning the wheel to maximum poser to zap the armor, use it's helmet to knock down the beakers. One of them has a gem.
Triangle
Lmdmgemstm2
E-1 and Bonus Haunted Catacombs After the Underground Lab, follow the direction the suits of armor point shen checking them. At the last tunnel with no suits of armor, go to the farthest back point and go right. Use the Dark-Light Device on the painting of a spider web and light it with the fire nearby. Burn the webs you saw along the way for a gem.
Rectangle
Lmdmgemstm3
E-1 and Bonus Cliffside From the Underground Lab door go right, down, right, and up twice. This will lead you to a door that goes to the Cliffside. Take the gem down from the vine.
Football
Lmdmgemstm4
E-2, E-3, E-5, and Bonus Front Entrance Reveal the missing chain attached to the gargoyle statue. Pull it and open the safe under the stairs for a gem.
Tear
Lmdmgemstm5
Restrooms Pull the chain on the toilet in the western side of the room.
Stone
Lmdmgemstm6
E-2 and Bonus Gargoyle Roof Pull on the mammoth trunk in the Ice Age Exhibit to access the Gargoyle Roof. Find three stars around the "room" and shoot them into the giant star made of smaller stars. A gem will fall from the sky upon completion.
Rhombus
Lmdmgemstm7
E-2, E-3, E-5, and Bonus Ancient Exhibit Water the spout close to the door, and use the Strobulb on the plant that appears. A gem will pop out. You can find the bucket in the Dark Age Exhibit and the water in the Jungle Exhibit. Use portals to traverse.
Star
Lmdmgemstm8
E-3, E-5, and Bonus Aviation Exhibit Pull all of the sandbags off the hot air balloon.
Octagon
Lmdmgemstm9
E-3, E-5, and Bonus Nautical Exhibit Place something like a log or a bucket of water of the life savior on the ship to make the wheel go down. Go out to the end of the ship and open the chest with a gem in it.
Oval
Lmdmgemstm10
E-3, E-5, and Bonus Dark Age Exhibit Using a Balloon Berry, fly up and right to find a gargoyle with a blue book. Use the Strobulb on it to make it drop the book and fly back down. Put that book into the bookshelf in the Dark Age Exhibit.
Spindle
Lmdmgemstm11
E-3 Jungle Exhibit Either use a Balloon Berry or enter from the East Balcony to get to the top part of the Jungle Exhibit. Find the Golden Balloon Berry and collect all the coins for a chest with a gem in it.
Coffin
Lmdmgemstm12
E-3 Ice Age Exhibit Use a Balloon Berry to fly to the tiop left portion of the Ice Age Exhibit. Collect all the coins from the Golden Balloon Berry for a chest with a gem in it.
Mushroom
Lmdmgemstm13
E-3, E-5, and Bonus Train Exhibit Use the Dark-Light Device on the missing track in front of the door. Afterwards ride the train once for a gem.

Luigi's Mansion 3[]

In Luigi's Mansion 3, Gemstones make a return for The Last Resort, and also are simply called gems. This time they utilize many other tricks, like the Burst, Suction Shot, or even the Super Suction. There are much more gems in total (37 more, making a total of 102 to be exact) and thus instead of changing the color for each floor's gems, they change the shape, usually representing the theme of the floor, except the first ones, which show more common cuts for gems. There are 6 gems in total and each floor has these colors:

  • White Gem
  • Red Gem
  • Blue Gem
  • Green Gem
  • Purple Gem
  • Yellow Gem

Collecting all the gems for a certain floor will award an Achievement for that floor. Collecting all of the gems in the whole game will award the Suction Shot Type-C, which is a reskinned version of the suction shot that looks itself like a gem.

Additionally, these floors have these shapes as listed:

Floor Shape Examples
B2 - Boilerworks Wrench
Boilerworks Gems
B1 - Basement Square Cushion
Basement Gems
1F - Grand Lobby Diamond
Grand Lobby Gems
2F - Mezzanine Oval
Mezzanine Gems
3F - Hotel Shops Teardrop
Hotel Shops Gems
4F - The Great Stage Music Note

(8th Note)

The Great Stage Gems
5F - RIP Suites Emerald Cut
RIP Suites Gems
6F - Castle MacFrights Sword
Castle MacFrights Gem
7F - Garden Suites Flower
Garden Suites Gems
8F - Paranormal Productions Video Reel
Paranormal Productions Gems
9F - Unnatural History Museum Dinosaur Footprint
Unnatural History Museum Gems
10F - Tomb Suites Cobra Snake
Tomb Suites Gems
11F - Twisted Suites Dice
Twisted Suites Gems
12F - The Spectral Catch Skull & Crossbones
The Spectral Catch Gems
13F - Fitness Center Dumbbell
Fitness Center Gems
14F - The Dance Hall Headphones
The Dance Hall Gems
15F - Master Suite King Boo
Master Suite Gems

Trivia[]

  • A special animation plays whenever Luigi collects a gem. There are two versions for it: the one for Luigi's Mansion: Dark Moon and the one for Luigi's Mansion 3.
  • There are 167 gems in total throughout both Luigi's Mansion games.
  • The Suction Shot Type-C may have been based on all the gems that Luigi collected.
Luigi's Mansion: Dark Moon
Game Modes ScareScraperDark Moon Quest
Characters LuigiMarioPolterpupProfessor Elvin GaddToad
Objects Balloon BerryBillClock HandCoinDual ScreamDark MoonE-GateGearGemstoneGold BarGold BoneHeartKeyMoneyParanormal PortalParanormal ShieldParascopePixelatorRed CoinRibbonRobombRotorSpecial CompassSpike Ball PlantTreasure ChestVane
Poltergust 5000 Dark-Light DeviceFlashlightStrobulb
Ghosts BooCreeperGobberGold GreenieGreenieHiderMummy GreeniePolterpupsSlammerSneakerSpirit BallStatue Armour GhostStrong GobberStrong GreenieStrong HiderStrong SlammerStrong Sneaker
Bosses Ancient PoltergeistBig BooGrouchy PossessorHarsh PossessorKing BooOverset PossessorGhost BrothersShrewd PossessorStrong PoltergeistThe Three SistersTough Possessor
Non-ghost enemies BatBeetleCrowCarnivorous PlantFrigid BeetleFrogFuzzballMouseOrange FlowerRobotic BombSpiderTrapdoor
ScareScraper Ghosts AweberryAwelligatorBad-mintonBanegalBeetle WhispererBig PolterpupBlimp ReaperBlobberflyBlue PimpernelBomb BrotherCaweClown FishyCold CatcherCreeper LauncherDaisyDreadonflyFootbrawlFreaker SneakerFright FlyFright KnightGoolfGo-BeeHorrorcaJack-goo-lanternLady GugLeoprankPink ZinniaPondguinPrimordial GooScareamblesScarsScoolScornSoccer BallShriek SharkSpooky SpookSpookumberSun FlowerTerrible TeleporterTerrorangeTether JacketThe BrainVioletWurdleYukata BallZebrawl
Rooms Gloomy Manor BalconyBedroomCellarCoatroomCommon HallDining RoomEntranceFoyerFront YardGarageGuard HallKitchenLabLibraryLobbyMaster HallMudroom •  Mudroom ExteriorParlorPatioRaftersSecret PocketStudioStudyUnder the Stairs
Haunted Towers Botany LabConservatoryCourtyardCrow's NestCryptEast HallEerie StaircaseFamily RoomGardenGardener's DwellingGardener's LabGreenhouseHaunted Towers EntranceHollow TreeHydro GeneratorLaboratoriesLoungeMaintenanceOld GraveyardPlant NurseryRooftop PoolRumpus RoomSeedling LaboratorySewerSkybridgeSolariumTool ShedToolshed StairsTower LobbyTree HouseTree RootWater SupplyWest BathroomWest BedroomWest GardenWest Hall
Old Clockworks AntechamberBelfryBelfry ClockCanyon HallCanyon NarrowsCanyon StairsCargo RoomClock Tower GateClockmaker's ChambersClockworks CourtContainer YardCrank RoomDrafting OfficeFinishing RoomGear ChamberKiln RoomMaintenance HubMovementsPit SlideQuarryRoundhouseRoundhouse PitService ElevatorStorage RoomStorm CellarSynchro GantrySynchronization RoomTombTransportation HallWarehouseWorkshop
Secret Mine AirwayBasinChaletChalet ApproachCinder MineCoward's ChasmCrossroadsCrystal QuarryDeep HallDrift HallFrozen PitFishing HutGondolaHigh WiresIce LakeMaintenance RoomPit MineProspector's CrossingShaftSkip SlopeSmokehouseSmuggler's HideoutTerminalUnder the IceWorkshopWorkshop Landing
Treacherous Mansion Ancient ExhibitArchivesAviation ExhibitBottom of WellCeremonial ChamberCliffsideDark Age ExhibitDungeon CellsEast BalconyEast CorridorEast GalleryFront EntranceGargoyle RoofGrand EastGrand WestGuard TunnelHaunted CatacombsIce Age ExhibitInner CourtyardJungle ExhibitKitchenNautical ExhibitRestroomsSpace ExhibitStudyTerraceTrain ExhibitUnderground LabVerandaWest BalconyWest CorridorWest Gallery
King Boo's Illusion ???
Others Beta ElementsBunkerCurseDamageGood Night!HPParanormal DimensionVaultEvershade Valley
Luigi's Mansion 3
Gamemodes ScareScraperScreamParkStory Mode
Protagonists LuigiGooigiProfessor Elvin GaddPolterpupMarioPrincess PeachToad
Objects BillCoinElevator ButtonGemGold BarGold BoneHeartKeyMoneyPearlTreasure ChestVirtual Boo
Poltergust G-00 BurstDark-Light DeviceFlashlightFlashlight Type-BPoltergust Type-GStrobulbSuction ShotSuction Shot Type-CSuper Suction
Ghosts BooGem GoobGolden GoobGoobHammerMini GoobMini HammerMummyOozerSlinkerSpirit BallTrapper
ScareScraper Ghosts AgoobisBomb GoobBomb HammerBomb OozerDiffusing GoobDiffusing HammerDisco HammerElectric OozerGoob the MagnificentHammersaurus RexLethal GoobLethal HammerLethal OozerLethal SlinkerMedic GoobMergoobNeon GoobPantogoobRegen GoobRegen HammerRegen SlinkerSir GoobSkelegoobSlabhammerSpeed GoobSpeed HammerSpeed OozerSwabbie GoobThieving SlinkerTutankhammerWarp Slinker
Non-ghost enemies BatCarnivorous PlantCrowFake CarpetFake DoorMousePiranhaPossessed Garbage BinPossessed Treasure ChestSnakeSpider
Bosses StewardChambreaKrullerChef SoulffléAmadeus WolfgeistKing MacFrightsDr. PotterGodzillaMortyUgClemSerpciNikki, Lindsey, and GinnyCaptain FishhookJohnny DeependDJ PhantasmagloriaHellen GravelyBoolossus (ScareScraper) • King Boo
Floors of The Last Resort B2 - BoilerworksB1 - Basement1F - Grand Lobby2F - Mezzanine3F - Hotel Shops4F - The Great Stage5F - RIP Suites6F - Castle MacFrights7F - Garden Suites8F - Paranormal Productions9F - Unnatural History Museum10F - Tomb Suites11F - Twisted Suites12F - The Spectral Catch13F - Fitness Center14F - The Dance Hall15F - Master SuiteRooftop
Others AchievementsCostumesDamageGalleryGood Night!HPNext Level GamesNintendoNintendo SwitchParanormal PortalRanks
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