There's a picture in Rime in the first hut with a diagram of the crystals there with the D'ni "Pihrihn Fuhsh". But I can't find any mention of Pihrihn Fuhsh nor the crystals themselves. Is there any way an article could be added?
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No idea, sorry - maybe Alahmnaht (I think that's how it's spelt, I haven't been on for quite a while) could help you.
But "Pihrihn Fuhsh"? Hmmm... my D'ni is a little rusty - but I'm sure I or someone here could decipher that if it's not already been translated.
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What adventures does your future hold - only time can tell.
The words "pirin" and "fush" are both unknown d'ni words, but it's speculated that "fush" is a verb and "pirin" is the participle of another verb "pir". The other text on the Rime picture is "toomin tool tsoid", which means "[something]ed, I grow, I glow", so we think the construction is parallel.