Crystal Chunk
The crystal chunk is the blue crystal that you can find all over the world in Genshin Impact. To quickly obtain crystal chunks, you may use a character that can break rocks such as Noelle. With just several hits, Noelle is already able to crush the rock and obtain the crystal chunks.
Where To Find Crystal Chunk
There are a lot of crystal chunks that can be found near the lair of the Stormterror.
Then there are random crystal chunks across the world. You can get a lot of the crystal chunks in the mountains of Liyue.
They are also clustered near one another, and I find they are more visible and easy to spot in Liyue. There are also additional crystal chunks near the Liyue harbor.
