The most beautiful gems in the world are usually found underground, but the oysters, the stars of the feast table, also have a reputation as a treasurer.
Pearls are produced involuntarily by some two-barreled clams, mostly pearl oysters, which form when an irritant, such as a particle of food or a parasite, slips between the shells and is stuck in a mantle, a muscle wall containing the internal organs of the mollusk.
As a self-defense, the mollusk drains the fluid containing aragonite.
The pearls produced are different colors, shapes and sizes, and like snowflakes, there are no two identical.
Note that on the pearl oyster farms in the molluscs, foreign matter is deliberately introduced to obtain these famous pearls. According to the American Gemology Institute, the vast majority of the pearls sold in the market today come from this type of culture.
Less pleasant is the fact that some oysters also contain plastic, paraffins, and even a child's mixture.
Natural pearls are extremely rare. The Persian Gulf is the most important source of natural pearls. It is estimated that between 70 and 80 per cent of all pearls came from it until the 1950s. They are usually creamy, whereas in the Red Sea and the Strait of Manaar they tend to be lighter, sometimes even pink.
Note that natural sea pearls are also found at times in Lower California, Venezuela, China, Japan, Myanmar, India, French Polynesia, Australia, and Africa, and that the same regions offer the production of cultivated pearls.
The glittering nature of these stones has made them highly valuable objects over the past few thousand years in many cultures, and in Hindu folklore, for example, the moon was thought to cry with tears that turn into pearls when they fall into the sea and Greek mythology claimed that pearls