A pearl is a hard object produced within the soft tissue called the mantle, of a living shelled mollusk.
It is made up of Calcium Carbonate just like the shell of a mollusk. A pearl is deposited in concentric layers.
The ideal pearl is perfectly round and smooth, but baroque pearls occur in many other shapes. The finest quality natural pearls have been highly valued for many centuries.
The word pearl stands for something very rare, fine, admirable, and valuable.
The most valuable pearls occur spontaneously in the wild, but they are extremely rare. These wild pearls are referred to as natural pearls.
Pearls have been harvested primarily for use in but in jewels. In the past they were also stitched onto lavish clothing.
Pearls have also been crushed and used in cosmetics, medicines, and in paint formulations.