The Merakba star crystals are used in meditation to help you gain greater insight to your 8th chakra.
 
The eighth chakra - the soul star is the area where we connect with our higher self, this develops spiritual abilities. Bringing infinite energy, spirituality, supreme divine wisdom and spiritual compassion. Allowing the Divine white light of Spirit to fill your life with this energy encourages you to let go of old attitudes that may otherwise have held you back in your current life. It is the first transpersonal chakra. It is sometimes called the seat of the soul, as it is the point where spiritual energy, and Divine love, enters the body. Although there is a gateway between it and the crown chakra, commonly called the Stellar Gateway, this is the next chakra above the crown chakra in the etheric body.