The process of pearl formation inside an oyster is essentially a natural defense mechanism.
The process of pearl formation inside an oyster is essentially a natural defense mechanism. Entry of a foreign object: When a grain of sand, a parasite, or a tiny particle accidentally enters the soft tissue (mantle) of the oyster, the oyster experiences discomfort. Self-defense: To alleviate this discomfort or irritation, the oyster begins to secrete a type of iridescent fluid from its body. In scientific terms, this is called nacre or 'mother of pearl'. Layer formation: The oyster continuously deposits layers of nacre around the grain of sand or parasite. This is similar to a gift-wrapping process. Pearl formation: Over the years, thousands of layers of nacre accumulate, gradually transforming into a lustrous and hard pearl.