Erythrite Crystals are an essential mid-game item in Dune: Awakening. You’ll need them for crafting cobalt paste, which you use for several projects, the most of important being your first Ornithopter. Erythrite Crystal only shows up in one location, though, and unless you know where to find it, it’s almost impossible to stumble on it naturally.
Our Dune: Awakening guide explains where to find Erythrite Crystals and how to prep for the journey there.
Dune: Awakening Erythrite Crystal locations
Erythrite Crystals spring up in one place: Hagga Rift. That’s the deep trench that runs from just north of Riftwatch through Jabal Eifrit Al-janub before it spits you out at Pinnacle Station.
The crystals are giant and pink, but you won’t start seeing them until roughly halfway through the trench. The first batch we ran across was near the Wreck of the Kytheria, and after that, you tend to find them at intervals near the CHOAM Mining Facilities.
You’ll need a Mk. 2 Cutteray or better to extract Erythrite Crystal. Those have an orange background for the item information panel, so if you’re using a grey or purple one, it won’t cut it, literally.
Scavengers and other hostile opponents call the Hagga Rift home, so you’ll want to take plenty of healkits, an upgraded knife — a Crysknife using the Worm Tooth, if you’ve got one — and some decent equipment. Make sure you’re using a vehicle to travel here as well, even if it’s just the sandbike. You can use it as a respawn point in case you die, so you’re closer to where your backpack fell.
Erythrite Crystals and water are required to make cobalt paste, which you’ll need a fair bit of for advanced crafting and fabrication. However, if you repair your vehicles regularly, you can keep using them without having to craft new parts.