Black star stones, particularly black star diopside and black star sapphire, are believed to offer various benefits related to physical, emotional, and spiritual well-being. They are often associated with grounding, stability, and a connection to the earth. 
Physical Benefits:

• Immune System:
  It is believed to strengthen the immune system, offering protection against illness. 

• Grounding and Stability:
  Black star diopside is considered a grounding stone, providing a sense of stability and balance, which can be particularly helpful during times of change or uncertainty. 

• Healing and Circulation:
  Black star diopside is thought to possess a strong magnetic force that can help with wound healing, blood disorders, and improving the function of the heart, lungs, and circulatory system. 

• Emotional Healing:
  Black star diopside is believed to help individuals acknowledge and process past experiences, facilitating emotional healing. 

• Stress Relief:
  The stone's grounding properties are thought to contribute to emotional well-being and help reduce stress. 

• Inner Strength:
  Black star diopside is associated with inner strength and resilience, helping individuals overcome challenges. 

• Grounding and Connection:
  It is believed to facilitate a deeper connection with the earth and nature, promoting a sense of balance between the physical and spiritual realms. 

• Protection:
  Black star sapphires are traditionally believed to protect against evil spirits. 

• Enhanced Spirituality:
  Black tourmaline is believed to be beneficial for enhancing spirituality by absorbing negative energies and promoting positive vibrations. 

• Creativity and Analysis: Some believe black star diopside can enhance creativity and analytical skills.

• Learning: It is thought to aid in the learning process, making it a valuable resource for students.

• Reduces Aggression and Stubbornness: Black star diopside is believed to alleviate aggression and stubbornness.