Kyanite (Subnautica)

Kyanite is a raw material that appears as an angular blue gemstone, and can be clustered together in a large crystalline formation or found alone inside the Lava Castle.

Modification Station
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Neptune Fuel Reserve
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Trivia

 * There were once single pieces of Kyanite that could be found in deep Biomes, such as the Blood Kelp Zone or the Dunes. These were removed in a later update. Single pieces can still be found near the Alien Thermal Plant.
 * Kyanite is the only large resource deposit in Subnautica that is not guaranteed to eject smaller pieces when drilling chunks from a large node. This is not a bug.
 * There is a 0.0000005% chance for a large Kyanite deposit to yield 22 Kyanite pieces.
 * It is possible to reach the maximum yield each time by continuously saving and reloading the game until each drilled off chunk drops 2 pieces. This is also possible on Hardcore Mode, however, since it's not possible to quit the game without saving then the only option is to manually close the game, making the process much more tedious.

Disthène