Crash Bandicoot: The Huge Adventure - Level 3: Temple of Boom (2nd Gem)

This is the first level in the game with a 2nd Clear Gem to pick up. But first, you have to find the Red Gem in a different level, in this case Level 16: Star to Finish. Then, a Red Gem Platform will appear for you to find, teleporting you to a completely different route where this level's 2nd Gem can be found somewhere. Pick it up, and then go through the rest of this route until you can find the exit that will bring you back to the level's main route.