Howlite – This is a loving, calming stone that absorbs and uplifts tension, anxiety and stress. It may help soothe you into sleep. It is useful to control anger, bring calm and allow thoughtful communication to take place.
Obsidian is believed to help you become self-aware, enabling you to cut stress and negative patterns from your life. It is thought to help to release tension, and give the wearer a sense of calm and protection.