Natrolite is the most powerful stone to open the 3rd eye, crown, Etheric chakras. It is a high vibration stone that assists in purification on all levels and will cause personal shifts. Helps us to achieve the highest levels in our spiritual growth and health and will encourage synchronicity or coincidences to happen more frequently in daily life. It does well with other strong high vibration stones such as Herderite, Brookite, Phenacite,Moldavite.  Cryolite, Herkimer Diamonds and Danburite all make excellent companions to use that will amplify the energy of these other stones as they are rare and expensive and one usually only acquires a very small specimen.  
Uses - Ascension, Purification, High Vibration, Third Eye