Ruled by the moon, Moonstone brings Goddess energy and feminine power. It enhances yin qualities such as intuition, sensitivity and emotionality and is helpful in treating feminine conditions such as menopause, menstruation, and fertility. For men, it helps them connect with their feminine side. Like the sign Cancer, which is ruled by the moon, it is associated with mothers, mothering and motherhood. Moonstone promotes caring and nurturing for oneself and others.