Majorca Stone Beneficial for Headaches and Migraines. Natural Calming. Eliminates Negative Energies. Transforms into Positive Energies. Pearl Stone The pearl, also known as the lucky stone, is believed to open luck. It has the ability to repel negative energy and attract positive energy. It purifies negative emotions and increases self-confidence. It is a remarkable, interesting and reassuring stone. According to astrology, Cancer is believed to be the lucky stone.