No, these things are sold across Morocco as geodes, volcanic eggs.
When opened you see lovely crystals like so:
But they are fake. Totally manmade. The crystals grow vertically in both halves of the egg so the two halves are magically growing toward each other, and are symmetrically placed - probably grown over matchsticks - one central crystal evenly surrounded by a ring of six other crystals spikes. (Memo to self: must research how they do it.)
But it was so bad I had to get one. But at an eighth of the asking price. ...