It is called "black moonstone" but it is mostly gray and brown.
Moonstone Helps you connect to your inner goddess, as well as balancing feminine and masculine energies within you. This stone resonates with your crown (7th) chakra, assisting in spiritual awareness.
Moonstone is also know to be protective of women and children.
It is a Great mood stabilizer, helps with PMS, fertility, and eases pregnancy.
Moonstone promotes optimism, and can help depression and help you let go of past heartache and fears.
It helps us connect with the Goddess energy and connect to our feminine sides.