Exploring the medieval-themed floors in Luigi's Mansion 3 brings a unique blend of combat and environmental puzzles that challenge even seasoned players. The 6F area, known as Castle MacFrights, is full of hidden traps, breakable structures, and illusory walls that hide valuable collectibles. Finding all six floor-specific gems requires a keen eye and clever utilization of Luigi's Poltergust G-00 gadgets.
The Red and Green Gems in the Castle Corridors
The Red Gem is located in the Hall of Armor where a series of decorative suits line the stone walls. Players must use the Suction Shot on a specific chest plate or pull a hidden tapestry to reveal the hidden compartment containing the prize. Tracking down these items makes the adventure much more satisfying for completionists.
For the Green Gem, you need to explore the Royal Chamber area where a hidden mechanism is built directly into the wall structure. By using the Dark-Light Device near the suspicious drapery, a hidden shelf will materialize and drop the jewel onto the floor. This shows how crucial it is to sweep every room with your special flashlight before moving forward.
Unlocking the Purple and Blue Treasures
The Purple Gem can be uncovered within the Armory room where countless classic weapons and shields are stored. Luigi needs to locate a loose brick or use a plunger to break an unstable storage barrel tucked away in the upper corner. Uncovering this specific item requires a bit of environmental destruction that rewards curious exploration.
To obtain the Blue Gem, players must visit the Cellar area and look for an interactive structural puzzle. Using Gooigi to slip through a set of iron bars allows him to pull a heavy chain that raises a cage holding the collectible. Working together with your gooey clone is the definitive way to solve these advanced platforming challenges safely.
Finding the Yellow and Clear Gems
The Yellow Gem rests near the main cage room where a massive mechanical elevator operates. Luigi must position himself on the lift and blow air into a nearby fan to alter the platform height, exposing a small hidden alcove. Grabbing this shiny artifact requires careful timing and a solid understanding of wind mechanics.
The final Clear Gem is earned after interacting with the decorative banners found near the entrance of the arena section. Sweeping the area with the vacuum nozzle reveals a hidden switch behind a moving tapestry that triggers a safe drop. Gathering all these pieces completes the set and unlocks special achievements within the main laboratory hub.