Not sure if this is me just messing up the syntax or whether this is just impossible. So if I try and give myself a specific crystal essence using commands (take terra for example) it simply says it cannot be found. I was assuming it was simply "thaumcraft:crystal_essence_terra" however this does not seem to be a thing.

If I simply type "thaumcraft:crystal_essence" it will give me a random essence, is there any way to spawn in specific crystals (I need the Id so I can add a few to the ex nihilo sieve)?