Yikes! The nutcracker is way too powerful for your simple dissection!

You would crush the mystery "rock"
by using nutcracker. And then you would
never be able to see what was inside,
or at least you wouldn't see the insides
in their natural shape or condition.

That is the whole point of dissecting something, right?

We use the nutcracker on nuts, of course, and we use tools like garlic presses on garlic, when it doesn't matter if the items stay in their original condition.

Try one of the other tools
you collected instead.

Or, if you are done taking the object apart,
you can continue with your investigation...