Fine pearls
Fine pearls are gemstones that are formed within an oyster or a mollusk.
Fine pearls have always been considered as treasured gems – from ancient civilizations until the modern ages. They can either be natural or cultured.
In nature, this occurs when an irritant enters the shell of the mollusk. Contrary to popular opinion, the irritant is not really a grain of sand but, more often than not, is a parasite.
The natural response of the mollusk is to create a sac made of epithelial cells around the irritant. The mollusk then secretes a substance which is called nacre. The inner lining of the mollusk’s shell is actually made of the same substance, which is crystalline in nature.
The nacre then builds up in layers around the sac. The result is a fine pearl that is sought for by many people around the world.
See also