Moonstone is a very personal stone. It is a reflection of the person who owns it. It does not add or detract, only shows how it is. This is why the moonstone is said to perceive that which "is".
Moonstone is an excellent stone to use in meditation to understand oneself. Placing it in the moonlight of a moon reaching its fullness, not a full or waning moon, can revitalize it. This is a particularly good gemstone for women. It is a good stone for young women or teenagers.
Moonstone is used by healers to stimulate the functioning of the pineal gland and balance internal hormone cycles with nature's rhythms. Moonstone is a stone of inner growth and strength. Though often considered to be a woman's stone, it can be beneficial to men in opening the emotional self.