Crash Bandicoot 2: Cortex Strikes Back - All Colored Gem Locations

Blue Gem (Warp Room 1 - Turtle Woods): To get the blue gem you will need to play the level Turtle Woods and complete it without destroying any of the boxes in the level. Red Gem (Warp Room 1 / Basement - Air Crash / Snow Go): To get the Red gem you will need to find the secret exit in Air Crash. The secret exit is located after the second checkpoint before you get to the hoverboard. There will be boxes in the water that you will need to jump on, and you will have to make it to the platform to the right of the water. This unlocks Snow Go in the basement. Go through the level Snow Go and you will eventually just fall on top of the red gem. Green Gem (Warp Room 2 - The Eel Deal): To get the green gem you will need to play through the level until you get to an area where your path splits left or right for the first time. Go right and you will see a whole bunch of nitro boxes. Progress past these boxes and there will be a fake wall that you can pass through. After passing through the wall make it towards the end of this secret area to obtain the gem. Yellow Gem (Warp Room 3 - Plant Food): To get the yellow gem you will need to beat this level under a certain amount of time. Once you get to the second hoverboard the timer will appear in the bottom right corner of the screen. Purple Gem (Warp Room 4 - Bee-Having): A little more than halfway through this level you will come to a part where there are nitro boxes stacked together on top of steel boxes that make a stairway. Jump up on these boxes as they wont kill you and they will warp you to a secret area. Go through the are and you will find the gem as you make your way to the end of it.