Black Onyx Hi. Can everyone and anyone use black onyx? I bought a black onyx ring to wear it daily just because I liked it. The sales girl told me people use it to get rid of negative energies and it brings in wealth. I didn't take it seriously. Then I thought of getting some info about onyx and read that it may bring bad luck if the stone is not taken good care of or if worn by someone who should not wear it based on their particular horoscope etc. Any advice please?* Thank you.