Pearl is the stone of Moon. Pearls are formed when an irritant, such as a bit of food, a grain of sand, or even a piece of the mollusk's mantle becomes trapped in the mollusk. To protect itself, the mollusk secretes substances that it also uses to build its shell - aragonite (a mineral) and conchiolin (a protein).
These substances are secreted in layers and a pearl is formed. It is concerned with vision, feelings, temperaments and richness. At the point when the moon is in malefic position, it causes afflictions, for example, frosty, hack, fever, eye infirmities, throat issues, menstrual issues and intestinal issues.