250gr Medium Polished Onyx Box Onyx is considered a stone of envy, but also a powerful stone of personal power and energy balance. It expands mental and physical strength, increases self-control, drives away negative thoughts, awakens the joy of living and helps to overcome all fears. The Onyx stone balances our energy flow and the Yin and Yang energies in our body. It opens the way for us to receive guidance from the higher planes. Onyx drives away all negative energies and fights and repels spiritual attacks.