If you’ve just begun to navigate the Treacherous Mansion’s expansive E-tunnels you’re probably wondering where those precious Gems are hidden. Fear not (well, fear a bit, there be ghouls aplenty) as we’ve got you covered once more with another extract from our official eGuide.

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GemLocationMissionNotes
Round Diamond Underground Lab E-1 Front-Door Key Spin the wheel to zap the armor, then launch the helmet at the glass jar on the wall.
Trillion Diamond Haunted Catacombs E-1 Front-Door Key Burn the webs in the second half of the Haunted Catacombs.
Baguette Diamond Cliffside E-1 Front-Door Key Reach the Cliffside’s B2 level and vacuum the Gem down from the vine.
Football Diamond Front Entrance E-2 Double Trouble Reveal and A-Pull the missing chain attached to the gargoyle, then open the safe under the stairs.
Drop Diamond Restrooms E-2 Double Trouble A-Pull the chain in the west half of the Restrooms.
Pebble Diamond Gargoyle Roof E-2 Double Trouble Launch the stars into the constellation’s empty slots.
Rhombus Diamond Ancient Exhibit E-2 Double Trouble Water the sprout near the door, then flash the purple flower.
Star Diamond Aviation Exhibit E-3 A Train to Catch A-Pull each of the hot air balloon’s sandbags.
Octagon Diamond Nautical Exhibit E-3 A Train to Catch Open the chest at the end of the pirate ship.
Oval Diamond Dark Age Exhibit E-3 A Train to Catch Place the blue book from the Front Entrance into the slot on the bookcase.
Spindle Diamond Jungle Exhibit E-3 A Train to Catch Use the gold bulb to collect the coins that appear, then open the revealed chest.
Coffin Diamond Ice Age Exhibit E-3 A Train to Catch Use the gold bulb to collect the coins that appear, then open the revealed chest.
Mushroom Diamond Train Exhibit E-3 A Train to Catch Reveal the missing piece of the track, then ride the train around the room.

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