Subnautica Wiki
This article is about Kyanite in Subnautica. Click here for information on this subject in Below Zero.

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.

Uses in Crafting


Spoiler alert: The following section contains story related material.

Ion Cube.pngKyanite.pngKyanite.pngArrow-right (1).pngFabricator.pngArrow-right (1).pngBlue Tablet.png

Vehicle Upgrade Console

Kyanite.pngKyanite.pngPolyaniline.pngPolyaniline.pngWiring Kit.pngArrow-right (1).pngVehicle Upgrade Console.pngArrow-right (1).pngPrawn Suit Thermal Reactor.png

Cyclops Upgrade Console

Polyaniline.pngPolyaniline.pngKyanite.png×4Wiring Kit.pngArrow-right (1).pngCyclops Upgrade Console.pngArrow-right (1).pngCyclops Thermal Reactor Module.png

Modification Station

Cyclops Depth Module MK2.pngPlasteel Ingot.pngKyanite.pngKyanite.pngKyanite.pngArrow-right (1).pngModification Station.pngArrow-right (1).pngCyclops Depth Module MK3.png

Prawn Suit Depth Module MK1.pngTitanium.png×5Lithium.pngLithium.pngKyanite.pngKyanite.pngKyanite.pngArrow-right (1).pngModification Station.pngArrow-right (1).pngPrawn Suit Depth Module MK2.png

Spoiler alert: The following section contains story related material.

Neptune Fuel Reserve

Plasteel Ingot.pngCrystalline Sulfur.png×4Kyanite.png×4Ion Power Cell.pngIon Power Cell.pngArrow-right (1).pngRocket Base.pngArrow-right (1).pngNeptune Escape Rocket Stage 2.png

Data Bank Entry

Kyanite is a blue silicate mineral which forms under high temperature, high pressure conditions. It is resistant to heat up to 1100 degrees Celsius, and is thermoelectric, making it a valuable component of thermal power plants.

Assessment: Essential for advanced fabrication



  • 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.