1. Purification: Onyx is believed to have purifying properties, both for physical spaces and for the energy within those spaces. Placing items or water in an onyx bowl is thought to cleanse and purify them.
2. Enhanced focus and concentration: Using an onyx bowl during meditation or mindfulness practices is believed to help improve focus and concentration, making it easier to enter a calm and meditative state.
3. Harmony and balance: Onyx is often associated with promoting harmony and balance in one’s life, both emotionally and spiritually. It is believed to help individuals find a sense of equilibrium.
4. Protection: Like onyx jewelry or ornaments, onyx bowls are thought to have protective qualities, guarding against negative energy and potentially providing a sense of security.
5. Enhanced energy flow: In some spiritual practices, onyx is believed to facilitate the smooth flow of energy throughout the body, helping to balance the chakras and promote overall well-being.
6. Stress reduction: Using an onyx bowl in rituals or practices may help reduce stress and anxiety, leading to a greater sense of relaxation and tranquility.
7. Aesthetic and decorative benefits: In addition to metaphysical properties, onyx bowls are valued for their natural beauty and unique banding patterns. They can be used as decorative items that enhance the aesthetics of a space.

Remember that these beliefs are part of various spiritual and metaphysical traditions, and the effectiveness of an onyx bowl in providing these benefits is largely a matter of personal belief and experience. If you choose to use an onyx bowl for its potential benefits, it’s essential to approach it with an open mind and seek guidance from knowledgeable practitioners if desired. The use of onyx bowls can be a part of various practices, such as crystal healing, feng shui, or energy work.