Meaning
Since ancient times, onyx has been valued for its deep color and noble appearance and used in jewelry and art objects. It is said to strengthen self-confidence and promote a healthy egoism, making it easier to achieve one's goals and self-realization.
Alleged effect
The wearer of onyx is said to develop improved assertiveness. Onyx is said to promote concentration and analytical thinking. On a physical level, it is said to sharpen the sense of hearing and be helpful in treating inner ear disorders. It is also said to strengthen the immune system and support the growth and strength of nails and hair.