I picked it up from a heap of soil that came off an excavation. It is slightly magnetic ie attaches to a magnet on a string.
closed as unclear what you're asking by Spencer, trond hansen, Gimelist, Fred, daniel.neumann Nov 9 at 8:38
Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.