**Warning  Manganese-rich Crystal***

Avoid water/ ingestion, wash hands after touching. In addition, some gems have no known toxicity but are still soluble in acids. If you swallow particles of these gems, their dissolution in your stomach could release impurities in the mineral. Certain gems may react dangerously with stomach acid to produce hydrofluoric acid (HF) or hydrogen sulfide gas (H₂S). Avoid ingesting gems that may produce these dangerous substances.