Materials are key in progressing through Subnautica: Below Zero and one that you may have trouble finding on your aquatic adventure is Kyanite. The deep-blue, heat-resistant crystal can certainly be evasive, but finding some allows you to craft things like the Seatruck Depth Upgrade Mk3, the Prawn Suit Depth Upgrade Mk2, and the Prawn Suit Thermal Reactor. The third Seatruck depth upgrade being the most important as it is necessary to reach one of the final, and certainly deepest, parts of the game. You may even need a piece (or three) of Kyanite to craft a certain set of organs for a certain bodiless consciousness as Subnautica: Below Zero reaches its climax.
Preparing to Find Kyanite
Before you begin your journey into the depths, you should know that Kyanite resides in some of the deepest locations in Below Zero. There also happen to be multiple Shadow Leviathans in these areas, so make sure you bring a repair tool and plenty of batteries so that you will be able to keep your Seatruck in working order. You will also need to make sure that your Seatruck is already upgraded with the Seatruck Depth Upgrade Mk2 to make sure it can survive down that far.
It also couldn’t hurt to bring extra food, water, a mineral locator, a Seaglide, and maybe even an additional upgrade for your Seatruck such as the Perimeter Defense Upgrade, Horsepower upgrade, or Afterburner just to help avoid the Leviathans – however, these aren’t necessarily required.
Where to Find Kyanite in Below Zero
Now that you are prepared for your journey you will be headed to the Crystal Caves. Kyanite also resides in the Fabricator Caves of Below Zero, but these are even deeper and will likely be nearly inaccessible without the Seatruck Depth Module Mk3. The Crystal Caves can be reached by heading past Marguerit’s Seabase (underneath the Lilypad Islands) and continuing down the tunnel system that follows. Once in the Crystal Caves, you will notice an abundance of different materials of all kinds as well as the signature giant crystals.
Explore your surroundings as much as is possible while avoiding the Shadow Leviathans and staying out of crevices to keep yourself at a safe depth and away from the deposits that sit at the bottom of the Crystal Caves (these require a Prawn Suit to mine). Using your mineral detector and Seaglide you should be able to make your way around the caves and you will notice small, blue, crystal-like minerals coming from the ground – this is your Kyanite! It is usually pretty dispersed so don’t be afraid to take some larger laps around the caves looking for it in all different places.
Make sure to collect two pieces for your Seatruck Depth Upgrade Mk3 and three for the end-game, story-required crafting I mentioned earlier in the article. In Below Zero, the Prawn Suit Depth Upgrade Mk2 requires 1 piece of Kyanite and the Prawn Suit Thermal Reactor requires 2. Happy Hunting!
Our Other Subnautica: Below Zero Guides
- Tips to Start Your Journey on the Right Flipper
- Where to Start Your Seabase (and More Tips)
- Finding the Koppa Mining Site
If this Below Zero guide helped you out in finding Kyanite or you have tips of your own, let us know in the comments below or share it to help out someone else in their search.