Pearl is a hard object collected from shell of a sea animal mollusk. The main chemical component is calcium carbonate. The good pearl are very smooth and proper made round. Pearl is primarily used for making of jewels. Pearl is also used for chemicals, medicines, after being crushed.
Importance or Benefits of pearl are related to Moon as per the Vedic astrology.
This is the ornament for planet moon. This is worn or kept if the placement of moon in jataka / kundali / birth chart is found to be positive and auspicious. All problems or diseases occurring because of moon are cured by wearing this. Mental tensions, mental imbalance, diseases related to cold e.g. asthma, joint pain, Epilepsy, Dyspepsia, beriberi etc diseases are cured with pearl. The mental tensions and problems because of mental tensions are easily cured with pearl. All these can be helpful if moon is auspicious according to the karaka birth chart. Diseases related to urinary system are also easily cured with pearl. This is very helpful in case of sex related diseases. Moon represents coolness and by wearing Pearl, one gets coolness and simple character like Moon or Chandra.
Rudraksha has very good and positive effect for people affected with diseases related to moon. Rudraksha does not have any negative effect. The power of rudraksha is multifold compared to pearl. Rudraksha can be worn instead of pearl. 2 mukhi rudraksha is for planet moon. Please refer rudraksha for moon for more details.