Keshi pearls are unique, lustrous formations that develop within molluscs such as oysters and clams. Unlike traditional pearls, Keshi pearls are composed entirely of nacre, as they form without a nucleus. They are created when a mollusc rejects or fails to retain the implanted nucleus during the culturing process, leading to the deposition of pure nacre. As a result, Keshi pearls exhibit exceptional luster and an organic, freeform shape. They are found in a variety of colors, including white, cream, pink, silver, grey, and even deep metallic hues.

Keshi pearls are often classified as a byproduct of the cultured pearl industry, yet their 100% nacre composition makes them highly valuable and sought after. Unlike nucleated cultured pearls, Keshi pearls are completely natural in formation, though they originate from a cultured process. Their rarity and unique shapes make them a favorite among jewelry designers and collectors.

Astrologically, Keshi pearls are associated with the Moon and are believed to enhance intuition, emotional stability, and clarity of thought. Their pure nacre composition is thought to amplify their calming and balancing effects, making them a favored choice for those seeking spiritual and emotional harmony.