There are six collectible gems on each floor in Luigi’s Mansion 3. In this guide, I’ll show you where to find all six gems on the 2F floor and tell you how to get your hands on them. You’ll need to unlock certain abilities before you’ll be able to collect some of these gems, so you may have to come back later on in the game.
Please note that some of the gems will appear clear rather than coloured in the screenshots seen below, this is because I had already collected them during my playthrough before creating this guide.
Gem #1 – Ballroom
From the top of the staircase leading from 1F, head to the left and you’ll be able to peak through a crack in the wall. When you do so you will see the Red Gem staring you in the face. To retrieve it, head through the double doors into the Ballroom and use your vacuum on the chandelier in the middle of the room. The chandelier will spin and a door will open on the left hand side of the room, granting you access to the gem.
Gem #2 – Dressing Room
The next gem is just north of the Ballroom in the Dressing Room. Head inside and you’ll spot a safe hidden behind a coat which is hanging up on the left hand side of the room. Vacuum up the coat and then use your Strobulb on the safe and it will pop open and throw out the Green Gem.
Gem #3 – Hallway
Next, head out of the Dressing Room and through the eastern doorway into the second Hallway. From here, head towards the big golden doors which have a fan next to them at the top of the corridor and use a Suction Shot to break the sign, revealing a second fan behind it. Now, use Luigi’s vacuum on one fan and Gooigi’s vacuum on the other, which will cause all of the lights above the door to light up and drop out the Yellow Gem.
Gem #4 – Entertainment Room
Now head south down the corridor and into the last door on the right. Walk around the top side of the pool table and you’ll see a sword on the wall, vacuum it up and it will get stuck in the end of your Poltergust. Now head up the steps in the room and the door to the dart board will slowly creak open. Fire the sword into the dart board and it will open up and throw the Purple Gem out for you.
Gem #5 – Restroom
Now head back up to the corridor and turn right before you get to the big golden doors. Head into the Restroom at the far end and use a Suction Shot to break the door on the right hand cubicle. Vacuum up the newspaper which you’ll find inside and a Ghost will appear. Defeat this Ghost and you’ll bag yourself the Clear Gem.
Gem #6 – Kitchen
Now it’s time to head through the big golden doors, through the Restaurant and into the Kitchen. Once inside, use a Suction Shot on the left hand refrigerator door to break your way inside, then use your vacuum on the shelves to the left to grab hold of an ice cube. Bring it back into the Kitchen and hold it over the stoves to melt it, which will award you with the Blue Gem.
And that’s it! Congratulations, you collected all six gems.