This checklist provides basic information about collecting Gems. If needed, you can find additional information inside our new and official eGuide — just click to the mission indicated on the checklist.
| Gem | Location | Mission | Notes |
| Round Amethyst | Mudroom Exterior | A-1 Poltergust 5000 | Vacuum the Gem from the tree. |
| Trillion Amethyst | Front Yard | A-1 Poltergust 5000 | Flash the purple flowers. |
| Baguette Amethyst | Parlor | A-2 Gear Up | Flash the clock. |
| Football Amethyst | Studio | A-2 Gear Up | Use the camera to locate the Gem near the window. |
| Drop Amethyst | Entrance | A-3 Quiet Please! | Search the armor, then launch the helmet into the painting. |
| Pebble Amethyst | Dining Room | A-3 Quiet Please! | Flash the safe in the ceiling. |
| Rhombus Amethyst | Kitchen | A-3 Quiet Please! | Grab the ice in the refrigerator and melt it on the stove. |
| Star Amethyst | Foyer | A-4 Visual Tricks | Reveal the missing door in the Patio, then head in and search behind the aquarium. |
| Octagon Amethyst | Patio | A-4 Visual Tricks | Use the Dark-Light Device to reveal the missing fountain. |
| Oval Amethyst | Library | A-4 Visual Tricks | Use the Dark-Light Device to reveal the missing globe. Launch the globe to break it open. |
| Spindle Amethyst | Study | A-4 Visual Tricks | A-Pull the curtains, then use the Dark-Light Device on the framed sketch. |
| Coffin Amethyst | Rafters | A-5 Sticky Situation | Collect the Gem from the top of the mirror. |
| Mushroom Amethyst | Bedroom | A-5 Sticky Situation | Clear the webs, then move behind the dressing screen. |
