 The Sun has a concentration of 0 @.@ 1 parts per billion ( ppb ) of beryllium . Beryllium has a concentration of 2 to 6 parts per million ( ppm ) in the Earth 's crust . It is most concentrated in the soils , 6 ppm . Trace amounts of 9Be are found in the Earth 's atmosphere . The concentration of beryllium in sea water is 0 @.@ 2 – 0 @.@ 6 parts per trillion . In stream water , however , beryllium is more abundant with a concentration of 0 @.@ 1 ppb . 
