Pearls are ruled by the Moon. Pearls are used to strengthen a weak Moon and can be worn if the Moon is well-placed in the birth chart. Pearls strengthen the mind, increase memory, and help control anger. Ownership of a good pearl brings wealth, children, popularity, fortune, fame, and freedom from disease and grief. Pearls can calm the nerves, free one from anxiety, lessen tension, and help with mental problems caused by too much heat in the brain and heart.