Onyx is said to promote personal strength and stamina, alleviate fears and worries, and to promote the health of bones, teeth, and blood.
Sardonyx is said to produce a vibration of happiness, optimism, and confidence, and to encourage motivation and discipline, making it helpful for mental focus, such as at school or work. It is also said to encourage integrity and virtue, helpful characteristics in maintaining a faithful relationship. For this purpose, it is suggested to place it under your pillow!
Smoky Quartz is a grounding stone that is said to protect one from negativity, and to amplify one�s energy.