Pearls are formed within the shells of marine and freshwater mollusks, and these pearl-producing shells are considered the primary source of pearls. Primary, but not the only source.
It turns out that pearls, both in chemical composition and beauty, can also form in caves. One such “pearl” cave exists in our country, located on the outskirts of Kizel—a city known for its Ural miners—along the banks of the Viashera River, and is often referred to as the Viashera Cave. In this remarkable cave, which stretches over 800 meters, you can find yellowish or whitish stones slightly larger than a pea. These are cave pearls.
While the global harvest of marine pearls amounts to hundreds of thousands each year, only a few dozen cave pearls have been discovered. Therefore, each new find is of great interest to science.
Currently, there are few such caves in our country, but perhaps local historians will uncover more in the future.