I just realised that I have never seen or used it, neither crude oil of course, but there are more variants of it than this natural mineral that powers a lot of the world.

What led to you seeing or touching coal?

  • Rose Thorne(She/Her)
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    7 months ago

    They’re not uncommon among the other “Crystal/Mineral Aquarium” experiments! They can grow some stunning structures over time, but moving them without damaging the growth can be a bit of an issue.