While white and sometimes yellow/golden cowrie shells are predominantly associated with Goddess Lakshmi and prosperity in Hindu mythology, black cowrie shells (often referred to as Kaali Kaudi in some regions) hold a distinct and specific significance, particularly within the Shakta and Tantra traditions.

According to Hindu beliefs, especially within these esoteric paths, black cowrie shells are closely linked to powerful deities like Goddess Maha Kali and Lord Bhairava. These deities are fierce forms of the Divine, known for their ability to destroy evil, overcome negativity, and offer strong protection to their devotees.

The symbolism and potential uses of Big Black Gavvalu include:
Protection from Negative Energies and Black Magic: The most prominent belief associated with black cowrie shells is their power to shield against negative energies, the evil eye, and the harmful effects of black magic or tantric rituals performed by others. Keeping or using them is considered a potent form of defense.

Worship of Kali and Bhairava: Black Gavvalu are considered sacred in the worship of Goddess Kali and Lord Bhairava. They may be offered to these deities during specific rituals or used as part of the worship paraphernalia to invoke their fierce protective energies.

Tantric Practices: In some Tantric traditions, black cowrie shells are utilized in specific rituals aimed at neutralizing negative forces, resolving complex problems, or for spiritual empowerment. Their use in these practices is often guided by specific texts and lineages.

Balancing Planetary Influences: In astrological contexts, black cowrie shells are sometimes used to mitigate the malefic effects of certain planets, particularly Saturn (Shani), Rahu, and Ketu. They are believed to help balance the negative influences of these celestial bodies.

Amulets and Charms: Big Black Gavvalu may be worn as amulets or kept as charms to provide ongoing protection against negative energies and to invoke the blessings of Kali and Bhairava.

In Hyderabad, while the use of white and yellow cowries for Lakshmi worship is more common, those familiar with Shakta or Tantric practices might recognize the significance of Big Black Gavvalu. These larger shells would be particularly potent due to their size, symbolizing a stronger concentration of the protective energies associated with them.

It’s important to note that the use of black cowrie shells often involves specific knowledge and practices, and they are generally associated with more intense and protective aspects of the divine. Their significance lies in their believed ability to counteract negativity and connect with powerful, protective deities.