Gem

Gem Gems (Known as Diamonds in Japanese localizations) are collectible stones that appear throughout the Crash Bandicoot series. Like crystals, they are powerful artifacts capable of harnessing planetary energy when collected (as stated by N. Brio in Crash Bandicoot 2: Cortex Strikes Back). They are usually collected by breaking all the crates or accessing alternative paths like Death Routes or Gem paths. In Crash Twinsanity, there are six gems hidden in each level for Crash to collect, which count towards 100% completion.

Overview
The gems appear in every main Crash Bandicoot console game to date. They are typically collected in every level that contains a crystal. The gems are different from crystals though. Crash is forced to collect the crystals in every level in order to advance in the game and plot, but gems are more optional for him to collect. However, they are still required to collect if the player wants to reach 100% completion.

According to N. Brio, the gems, like crystals, are powerful artifacts capable of harnessing planetary energy and can be used to power machines. Also like the crystals, the gems possess vast amounts of energy on their own.

Clear Gems
The most common way to collect gems is by breaking all the crates in a specific level. This requires Crash to go out and search every route and complete every bonus round to ensure that he earns the gem at the end of every level (except in Crash Bandicoot where crates in bonus rounds don't count towards the crates in the level). There are also different methods to collect the normal gems like completing a death route, specific task, or secret level.

N. Verted Gems
The N. Verted Gems, just like colored gems are similar to clear gems but inverted and they are unlocked after defeating N. Brio in Trouble Brewing. The method to collect these gems is complete every level in N. Verted Mode, getting Bumpa Berries, finding them hidden in somewhere of the levels and by breaking all the crates. They are required for the 100% and 106% completion in It's About Time.

Grey Gems
Only appearing in Crash Bandicoot: The Wrath of Cortex, these function like clear gems but can only be obtained by completing Gem Routes, discovery and objectives. These share the same model as the Red Gem.

Colored Gems
Colored gems are similar to the regular gems, but function differently and are more rare. There is only one of each color gem in most Crash Bandicoot games. Types of colored gems include blue, red, green, purple, yellow, and orange, though not all colors appear in all games. Colored gems are usually awarded to Crash for completing a certain challenge, task, or puzzle in a level. Most often this is beating a death route, but it also can be from discovering a secret area of the level or completing a special task. Once a colored gem is obtained, it is counted towards the regular gem total.

The difference between the colored and clear gems is that the colored gems provide a special lift in certain levels once they are obtained. These special gem lifts allow Crash to access different areas in a level in order to break more crates he couldn't break earlier or take him to a completely different route to collect more clear gems. These gem lifts will only work once the color gem has been collected though. Otherwise, only an outline of the lift will appear if the gem has not been collected yet. In Crash Bandicoot: The Wrath of Cortex, in any level that has a colored gem, the secret path to it will become outlined if the player has died anywhere but the special areas.

What follows is a list of each kind of gem and where they can be found in the various games.

Crash Bandicoot 2: Cortex Strikes Back
Obtaining all gems is one of the requirements for 102% completion and the second ending.

Crash Bandicoot: Warped
Obtaining gems is one of the requirements for maximum 105% completion and the second ending.

Crash Team Racing
In this game, there are five colored gems: blue, red, green, yellow, and purple. Each of these gems is acquired by winning the corresponding gem cup. The gem cups are unlocked by obtaining all CTR tokens of the same color. Obtaining all five colored gems unlocks Turbo Track.

Crash Bash
Each minigame (except boss fights) contains a green gem. These are the only gems in the game. They are obtained by either winning a round in a short amount of time, or with the odds against the player. Gems are required to unlock boss fights and move on in the game. 25 gems are required to unlock Keg Kaboom.

Crash Bandicoot: The Wrath of Cortex
Obtaining gems is one of the requirements for maximum 106% completion and the second ending.

Crash Bandicoot: The Huge Adventure
Obtaining gems is required to access the Mega-Mix hidden boss fight in which the final clear gem can be obtained and the second ending.

Crash Bandicoot 2: N-Tranced
In this game, all clear gems are obtained by breaking all boxes in a given level. There are three secret levels unlocked by obtaining all gem shards of a given color (and level theme) which are hidden in most platforming levels. These secret levels each contain a colored gem. To enter N. Tropy's boss fight, Crash has to obtain the three colored gems. Each of these colored gems is required in order to play the time trial in the respective level.

Crash Nitro Kart
In this game, there are four colored gems: blue, red, green, and purple. Each of these gems is acquired by winning the corresponding gem cup. The gem cups are unlocked by obtaining all CNK tokens of the same color. Obtaining all four colored gems unlocks Hyper Spaceway in adventure mode.

Crash Twinsanity
In this game, there are six gems hidden in every level, each of a different color: blue, clear, green, purple, red, and yellow. Unlike other games in the series, all gems share the same shape. Collecting gems unlocks concept art, storyboards, and cutscenes, located in the pause menu. The color of the gem indicates what type of gallery it unlocks.

Crash Bandicoot N. Sane Trilogy
The clear and colored gems reappear in the Crash Bandicoot N. Sane Trilogy remakes of the first three games, where they reprise the same roles they had in the original versions. Unlike the original version of the first game, the player can obtain a clear gem in the remake even after losing one or more lives, making the clear gems easier to obtain. Colored gems in the remake of the first game still require the player to break all the boxes in their respective levels without losing a life, however. Most importantly, there are also new gems added into the trilogy. Here are the updated tables:

Crash Bandicoot
Get all gems to get 104%. There is also the Stormy Ascent gem which adds an additional 1%.

Crash Bandicoot 2: Cortex Strikes Back
Obtaining all gems is one of the requirements for 102% completion and the second ending.

Crash Bandicoot: Warped
Obtaining gems is one of the requirements for maximum 105% completion and the second ending. There is also a newly added level, Future Tense, which adds an additional 3%.

Crash Team Racing Nitro-Fueled
The red, green, blue, yellow, and purple gems reappear in Crash Team Racing Nitro-Fueled where they serve the same purpose that they had in the original version of Crash Team Racing. Orange and clear gems also appear in Dragon Mines and Twilight Tour (alongside the other colors of gem) as props, but serve no other purpose.

Appearances

 * Crash Bandicoot
 * Crash Bandicoot 2: Cortex Strikes Back
 * Crash Bandicoot: Warped
 * Crash Team Racing
 * Crash Bash
 * 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
 * Crash Twinsanity
 * Crash Twinsanity (mobile)
 * Crash Bandicoot (mobile)
 * Crash Tag Team Racing
 * Crash of the Titans (Nintendo DS)
 * Crash Bandicoot N. Sane Trilogy
 * Crash Team Racing Nitro-Fueled
 * Crash Bandicoot 4: It's About Time
 * Crash Bandicoot: On the Run!

Trivia

 * In The Wrath of Cortex, all gems can be obtained by shooting them with the Fruit Bazooka.
 * In the N. Sane Trilogy version of the Cortex Strikes Back 100% ending cutscene, the orange gem can be seen along with the other colored gems, despite not being featured in-game.

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