Fake but fun too.

A camel egg perhaps?

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.
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