Diamond

Overview
Diamond is a refined resource in Astroneer used for advanced crafting and for activating a gateway engine on a planet. It appears in the game’s resource progression as a higher-tier material rather than a basic raw resource, and it is one of the ingredients needed for several endgame-leaning modules and equipment.
Diamond can no longer be researched in the 
Its main practical uses are:
- crafting multiple items and modules;
- activating a gateway engine on a planet.
The exact crafting list is part of the resource’s recipe table, but the important point is that Diamond is not a throwaway ingredient. It is consumed by several important recipes, so players usually benefit from keeping a supply on hand once they reach the stage where they can produce it reliably.
Diamond’s recipe chain is also relatively resource-intensive. One Diamond requires a total of 2 


As a progression resource, Diamond sits at the point where players begin dealing more with automation, advanced chemistry, and planetary objectives. Its role in activating a gateway engine makes it especially important for players working toward planetary completion and related unlocks. Since it is no longer usable as a research item, its value comes entirely from what it can build and unlock.
In short, Diamond is a high-value crafting resource with a limited but important role: it is manufactured from other refined materials, used in advanced recipes, and required to activate gateway engines.