Onyx is viewed as a powerful protection stone, and it is said to absorb negative energy from other people. The onyx stone releases mental stress and promotes emotional well-being.
Black onyx is closely associated with Saturn and is the gemstone for people who have the Zodiac sign Leo. For people born in the shadow of Saturn, onyx helps to bring positive vibes. In Indian traditions, onyx is said to aid people in forgetting about their past relationships and bring them into the present. People use black onyx for reducing stress and as an aid to getting a better night's sleep.