Onyx is stabilising in energy and brings strength, stamina and firmness; it is a grounding stone, connecting with the Earth element and the Root/Base chakra. Promoting stamina, often it is used to support those who are in sport and needing performance, endurance and fitness. Enhancing self-control and self-belief, it is believed to promote wise decisions and choices, connecting well to the confidence, while bringing clarity to the perception. Encouraging happiness and good fortune, those who wish to bring growth to their career path tend to become attracted to this stone. In crystal therapy, this stone can be used in support of the physical energy associated with the bones and the blood.