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12F — The Spectral Catch — All Six Gems — Luigi’s Mansion 3

Luigi's Mansion 3 guide hub

Find all six gems in 12F — The Spectral Catch. The colours are white, red, blue, green, purple and yellow. Gem collection is separate from the ending money rank; completing all seventeen floor sets unlocks Suction Shot Type-C.

Required tools and return visits

Unlock Gooigi and the Dark-Light Device before completing the floor. Clear the story route first if a door or room mechanism remains locked.

White gem — Grotto Lounge — missing pulley

Use Dark-Light on the southwest crate-and-skull structure to restore the pulley. Pull its rope with Suction Shot to obtain the white gem.

Red gem — Beach — mermaid statue

Vacuum coconuts from the palms and fire them at the mermaid statue on the left island. Capture the crystal ghost released when the statue breaks.

Blue gem — Elevator Hall — hidden X

After obtaining Super Suction, clear the floor furnishings. Follow the red trail to the X beneath the left side of reception and Burst on the mark.

Green gem — Treasure island

Read the treasure map on the ghost ship after Captain Fishhook. Return to the right end of the beach and restore the invisible bridges with Dark-Light. On the farther island, restore the hidden chest and open it.

Purple gem — First secret island

Follow the Dark-Light bridges from the right shore. Vacuum the sand on the first small island to uncover the purple gem before continuing to the treasure chest.

Yellow gem — Elevator Hall — hanging spheres

Take the metal globe from behind reception and launch it into the rightmost hanging sphere. Collect the yellow gem when the sphere breaks.

Six-gem check

Open the floor collection screen and check all six colour slots. A missing colour identifies the exact entry to revisit above. Gem ghosts must be fully captured before their gem is awarded.

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12F — The Spectral Catch — full walkthrough