Howlite teaches patience and helps to eliminate rage, pain and stress. A calming stone, Howlite calms communication, facilitates awareness and encourages emotional expression. Howlite balances calcium levels in the body. 
Black obsidian is believed to offer several benefits including: powerful protection against negative energy, deep grounding, emotional healing by releasing negative emotions and trauma, clarity of thought, stress relief, and support for personal growth; it is often used as a protective stone to absorb and transform negative energies from the environment, promoting a sense of safety and security.