One of the best known stones, it is useful for making wise decisions, self-confidence, centering vigor and stamina. It can help with grief, overwhelming fears, and balance of yin and yang. Body wise it is a help to teeth, bones, blood disorders and marrow.
It is considered to be a protective stone for dark nights and lonely places. It can be a portal to the future, showing you destiny. It is a banisher of old habits and can help rid one of what is no longer in their life. Thus, it is an excellent grounding stone.
It can help bring in aggression that is used in a good way. However, the stone should not be worn continuously. Holding it in a hand for 10 minutes is sufficient. Otherwise, its powers may overwhelm. Lastly, this stone has the ability to bring out your best and to enhance your best qualities.