The descriptions of the stones are encrypted?
In search of the answer, I e-mailed the developer asking if the descriptions were random or some kind of encrypted message. Here's the answer I got:
About thoses stones... Who knows if it's random, or the wise legacy of some ancient, mighty and forgotten people? Who knows, when it comes to lost artifacts and strange magic? But if I were you though, I wouln't lose too much time trying to understand it... If there's any bit of meaning in it, it's lost forever ;)
Besides the developer playing coy with me, what I can deduce from this is that, even if the descriptions have some background in the game's lore, they do not mean anything and can as such not be deciphered.