In astrology and traditional beliefs, Machmani (often referring to the Macha Macha Mani or "fish eye stone") is considered a powerful talisman with various benefits. It's also known as the "Sea Shell Stone." Here are some commonly believed benefits associated with Machmani:

Benefits of Machmani in Astrology:

1. **Protection from Negative Energies**: It is believed to ward off evil spirits and negative energies, providing a protective shield to the wearer.

2. **Improved Health**: Machmani is thought to have healing properties that can help in curing various ailments, especially those related to the eyes and stomach.

3. **Financial Stability**: It is said to attract wealth and prosperity, making it beneficial for those seeking financial stability and growth.

4. **Enhancing Relationships**: The stone is believed to improve personal relationships by promoting harmony and understanding among individuals.

5. **Mental Clarity**: Wearing Machmani is thought to enhance mental clarity, concentration, and focus, aiding in decision-making processes.

6. **Spiritual Growth**: It is considered helpful for spiritual development, assisting individuals in their spiritual journeys and practices.

7. **Emotional Balance**: Machmani is believed to help in balancing emotions, reducing stress, anxiety, and depression.

Usage and Wearing:

- **Astrological Consultation**: It is often recommended to consult an astrologer before wearing Machmani to ensure it suits your astrological chart.
- **Right Time and Day**: Specific days and times are suggested for wearing the stone to maximize its benefits.
- **Purification**: The stone should be purified before wearing, usually by washing it with clean water and chanting specific mantras.

### Common Beliefs and Practices:

- **Placement**: Apart from being worn as jewelry, Machmani can also be kept in homes or workplaces to bring in positive energy and prosperity.
- **Rituals**: Certain rituals might be performed while setting the stone to enhance its efficacy.