👉 The pearl fluid, also known as nacre fluid, is a viscous substance secreted by the mantle tissue of mollusks, particularly oysters and mussels, to form pearls. This fluid is rich in proteins, polysaccharides, and other organic compounds that facilitate the deposition of calcium carbonate crystals, which accumulate layer by layer to create the iridescent layers characteristic of pearls. The fluid's composition and properties are crucial for the formation of high-quality, lustrous pearls, as it not only provides the necessary building blocks but also protects the developing nacre from damage and infection, ensuring the pearl's integrity and beauty.
