Base de minerales y cristaloterapiaMineralesPreobrazhenskiteDavid Hospital·CC BY-SA 4.0·WikimediaPreobrazhenskiteMg3B11O15(OH)9Ortorombico third eye IMA grandfatheredComposiciónComposizione (% in peso)OBMgOOxygen65.7%BBoron20.3%MgMagnesium12.5%HHydrogen1.6%Chakras secundarioscrown