Onyx is typically a black stone that sometimes has translucent white layers running through it.
Onyx is the Greek word for "claw" or "fingernail" referring to the translucent layers.
Root
6.5 to 7
**** Disclaimer****
Crystal healing is not to be considered as a substitute for conventional medicine. If you have a serious health issue, you should consult your doctor. The healing properties listed here are from personal research and it does not mean that you will definitely experience or benefit from these properties and crystals.