As we known, a natural pearl is formed when an irritant […]
As we known, a natural pearl is formed when an irritant accidentally gets into the soft tissue of the mussel in an oyster. As a defense mechanism, the animal produces secretions to coat the irritant. Many layers of coating are deposited on the irritant making the irritant smooth. A natural pearl is thus born.
A Cultured Pearl is formed in the same process as a natural pearl. The only difference is that it begins by inserting a shell bead nucleus inside the oyster and irritating the oyster to produce the layers of nacre. The outer layers of a cultured pearl is composed of concentric layers of an organic substance and of calcium carbonate.
Human intervention starts the secretion of a cultured pearl, whereas natural pearl secretion starts without any human intervention.
Why are natural pearls so rare? It may take over 100,000 oysters to get enough pearls to make a pearl necklace. Matching natural pearls to make a pearl strand is extremely difficult since they are never round or uniform in size and color. A well- matched natural pearl strand can be extremely pricey.