Modpack version
0.5.9
Describe the bug
When trying to use celestial or rock crystals as material for Tetra, for the tools that need more than 1 crystal, is impossible to use it as a material as crystals can't be stacked.

Screenshots

Celestial Crystal working as a valid material in a hoe

Celestial Crystal not working as a material in an axe as it needs 2 pieces

Hmm, I'll try to find a solution. Thanks for the report!

I don't see a way to fix this tbh, sorry :/