Black Onyx

Black Onyx has long been known as a magical stone. It was utilized in magical practices, and was carved into magical stone amulets to wear on the body.
It is useful used in meditation, as they may stimulate the psychic gift of psychometry or clairsentience.
It's vibration may help you when you are studying as they have a good effect on the brain.
They are powerful healing crystals for you to use as they create a strong connection through the earth chakra to aid grounding.
These black stones have a soothing vibration that may help you to deal with feelings of grief and may assist stress.