Heliodor Heliodor is a form of Beryl and as such exhibits a hexagonal structure. Heliodor has a hardness of 7.5 to 8 on the Mohs hardness scale. Heliodor has a most agreeable nature that lifts energies, moods and spirits. It is a genuinely happy stone. The beryls by their nature have very harmonious and accepting energies that seek to blend all the energies present in a positively inspiring blend. This crystal can be used to bring in the sunshine on sad days, it will be great to work with for SAD ( seasonal affected disorder), depression and ME. This stone is simply a great stone to work with, bringing joy, happiness and accepta nce to bot the user and its environment. This crystal is also called golden beryl.