Find all six gems in B1 — Basement and E. Gadd. 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
Gooigi is required for the fenced garage, elevator-shaft grate and stairwell grate. Return after the 5F briefcase mission.
White gem — Garage — covered car
Remove the sheet from the car left of E. Gadd’s vehicle. Flash the green trunk sensor; the opened boot releases the white gem.
Red gem — Garage — fenced electrical box
Send Gooigi through the fence at the left of the garage. Pull off the electrical-box cover with Suction Shot, then flash the exposed sensor to operate the machine.
Blue gem — Elevator Shaft
Remove the upper-right garage panel with Suction Shot. Climb the ladder inside the elevator shaft, then send Gooigi through the grate on the upper walkway. Walk along the lower ledge to the gem.
Green gem — Laundry Room
Attach a plunger to the middle washing-machine door and pull it open. The green gem is inside the drum.
Purple gem — Service Hallway
Use the Dark-Light on the gem painting just outside the garage. Keep the beam on the painting until the purple gem is released.
Yellow gem — Service Stairwell
Return after unlocking Gooigi. At the upper stair landing, send him through the floor grate to the small platform below. Walk over to the yellow gem.
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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