Pearl or Moti is a Gemstone that is ruled by the Moon cold in nature and is considered to be a strong Gemstone in remedy for negative effects of Moon. It is found in White Rose Yellow and Black. White has major astrological values. It is said to help in getting peace of mind by giving stableness and by eliminating unnecessary worries and anger. It is an Opaque Gemstone. Wearing Day: Monday in the morning after bath. Cautions: One should remove and get a new one if the Gemstone gets cracked. Incase gemstone doesnât suits you Consult your astrologer. You should not wear Blue Sapphire Hessonite (Gomedh) & Diamond along with Pearl (Moti) unless a learned astrologer recommends so!