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Subnautica 2 Celestine Guide

How to get Celestine in Subnautica 2, where to look, what it is used for, and whether it should be a priority in Early Access.

Celestine quick answer

Celestine is a Material tied to Observatory, Power Plant. Get it when the current recipe, route, or base task needs it; do not fill storage with it before the next craft is clear.

FieldNotes
TypeMaterial
Main location or sourceObservatory, Power Plant
How to get itCollect during facility progress loops.
Main usesAdvanced crafting and modules
PriorityMedium

Location and route

Plan a short route around Observatory, Power Plant. Check oxygen, tool power, food, water, and open inventory slots before leaving. When Celestine is found, return and sort it with related materials so the next recipe is faster to finish.

Uses and crafting value

Use Celestine for advanced crafting and modules. If it is part of an electronics or ingot chain, keep some raw ingredients unprocessed until the exact recipe is pinned in-game.

Risk and farming notes

Tie it to a facility objective. Early Access recipes can change, so verify the current Fabricator, Habitat Builder, or module interface before spending rare materials. In co-op, assign one player to resource calls and one to storage so duplicate runs do not waste oxygen.

What to do next

Use this page with List of All Items, Resource Locations, and Crafting Priorities.

Early Access note

This page is current for the May 20, 2026 Early Access build context and should be rechecked after major patches.