Blue gem

The blue gem is a type of colored gem in the Crash Bandicoot series. Like the other colored gems, the blue gem is usually collected by completing a special task. Once it is recovered, the blue gem will unlock special routes by activating a platform or platforms in certain levels, known as gem paths.

Crash Bandicoot
In the original game, the blue gem is the flattest of the game's gems.

The blue gem can be obtained by breaking all the crates in the level Toxic Waste without losing a life. Once collected, it will unlock the gem paths in Rolling Stones, Cortex Power, and Jaws of Darkness. Out of all the colored gems in this game, the blue gem opens the most gem paths.

Walkthrough
 DM's Guide Crash Bandicoot 1 - Toxic Waste (Blue Gem) 

Crash Bandicoot 2: Cortex Strikes Back
The blue gem appears with the same shape it had in the first game, though like the other gems it has become opaque instead of translucent.

It can be obtained in the very first level, Turtle Woods. Rather than breaking every crate, it is acquired by not breaking a single crate. If the clear gem for this level has already been obtained, the box counter at the end will read 'x/0' (where 'x' is the number of broken crates), hinting at how to earn the blue gem. Once obtained, it opens up the blue gem path in Hang Eight and part of the multicolor gem path in Spaced Out.

Walkthrough
 Crash Bandicoot 2 - Blue Gem-0 

Crash Bandicoot: Warped
The blue gem appears exactly the same as in Crash Bandicoot 2: Cortex Strikes Back. It can be obtained by completing the death route in Tomb Wader from the fourth warp room. It opens up the blue gem path in Sphynxinator and part of the multicolor gem path in Bug Lite.

Walkthrough
 DM's Guide Crash Bandicoot 3 - Tomb Wader (Blue Gem - Skull Route)-1 

Crash Team Racing
The blue gem appears similar in color to Cortex Strikes Back and Warped. However, much like all five colored gems in the game, it has assumed the shape of a typical clear gem. It is a substantially lighter shade of blue in the inventory screen.

The blue gem is obtained by completing the Blue Gem Cup tournament. If the player completes the CTR Challenges on the race tracks Sewer Speedway, Tiger Temple, Dragon Mines and N. Gin Labs, to collect all blue CTR tokens, then the Blue Gem Cup will be available to play, where the four races can be raced again in a tournament. If the player wins the most points from all four races, they win the blue gem. It is required to complete the game because the other four gems are needed to unlock Turbo Track. The blue gem also unlocks Komodo Joe as a playable character.

Walkthrough
 Crash Team Racing Blue Gem Cup 1080 HD 

Crash Bandicoot: The Wrath of Cortex
The blue gem has a slightly different model than it did Cortex Strikes Back and Warped; it is less flat, features substantially more edges on the underside, and sports a lighter shade of blue, more akin to the color of the blue gem as it appears in the inventory screen of Crash Team Racing.

It can be obtained by completing the Death Route in Arctic Antics. It opens up the blue gem path in Tsunami.

Walkthrough
 How to get the Blue Gem - Crash Bandicoot Wrath of Cortex 

Crash Bandicoot: The Huge Adventure
The blue gem returns here with a sprite identical to the clear gem, only a dark blue. It is hidden in Ruined and is essential for opening up the gem path in Snow Crash. The death tornado spin is required to obtain it; Crash must jump from on top of the nitro switch crate back to the left to reach it on a small hidden path in mid-air.

Walkthrough
 Crash Bandicoot - The Huge Adventure (GBA) - How to get the Blue Gem-0 

Crash Bandicoot 2: N-Tranced
The blue gem returns in this game, however for a different purpose then gem paths. In this game, there are blue gem shards, found in the levels Tiki Torture, Magma Mania, Mister Lava Lava, and Eruption Disruption. The blue gem shards used to unlock the level Fire Walker, where the blue gem itself is found.

Walkthrough
 Crash Bandicoot 2 N-Tranced All Blue Gem Shards 

Crash Nitro Kart
Similar to Crash Team Racing, the blue gem is obtained by winning the Blue Gem Cup. The player must earn points by winning races on Barin Ruins, Clockwork Wumpa and Electron Avenue. Once earned, the blue gem unlocks Polar as a playable character.

Walkthrough
 Crash Nitro Kart PS2 BLUE Gem Cup 

Crash Twinsanity
Like the other gems, a blue gem can be found hidden throughout each level in the game, meaning there are sixteen in total. Collecting a blue gem unlocks a boss gallery in the game's concept art, accessible through the pause menu.

Walkthrough
 Crash Twinsanity - Gem Locations </Gallery>

Crash Bandicoot N. Sane Trilogy
The blue gem's shape is universally the same as the Cortex Strikes Back and Warped model in all three games. It is obtained in all the same ways, and unlocks all the same gem paths as it did in the original versions of the games. It has a custom-drawn icon on the pause screen and looks the same throughout all three games.

Walkthroughs
 Crash Bandicoot N. Sane Trilogy - Toxic Waste - Blue Gem Guide-0 Crash Bandicoot 2 - "Turtle Woods" Blue Gem (PS4 N Sane Trilogy) Crash Bandicoot 3 - N. Sane Trilogy - 105% Walkthrough, Part 25 Tomb Wader (Clear & Blue Gem)-0 </Gallery>

Crash Team Racing Nitro-Fueled
The blue gem reappears in Crash Team Racing Nitro-Fueled where it serves the same purpose that it had in the original version of Crash Team Racing. It no longer unlocks Komodo Joe as a playable racer, however.

Appearances

 * Crash Bandicoot
 * Crash Bandicoot 2: Cortex Strikes Back
 * Crash Bandicoot: Warped
 * Crash Team Racing
 * Crash Bandicoot: The Wrath of Cortex
 * Crash Bandicoot: The Huge Adventure
 * Crash Bandicoot 2: N-Tranced
 * Crash Nitro Kart
 * Crash Bandicoot Purple: Ripto's Rampage (as a card)
 * Crash Twinsanity
 * Crash Bandicoot N. Sane Trilogy
 * Crash Team Racing Nitro-Fueled
 * Crash Bandicoot 4: It's About Time

Trivia

 * In the first three games, the blue gem is always located in a level whose name is two words long, for which the first word starts with 'T' and the second word starts with 'W': Toxic Waste, Turtle Woods and Tomb Wader.
 * This gem is the only gem that changes its color in The Wrath of Cortex, sporting a more cyan hue instead of its typical deep blue.

Niebieski Klejnot