Cipher of the Goblin crystal
Three independent sources—two whistleblowers and one extremely talkative goblin—have confirmed that crystal is exactly what we feared, plus one extra thing nobody warned us about.
A goblin once tried to steal crystal. No one knows how the attempt went, because crystal was never the same after that. Some say the goblin succeeded and has been hiding crystal in a sock drawer ever since. Others say crystal escaped and is now hiding from the goblin. Both are equally plausible.
The Goblin Council on silence
A specific tavern song circulating in the goblin warrens features silence as its third verse. The third verse is, by convention, hummed rather than sung, because the words are 'between us and the dark, and the dark would prefer it.'
Variant Goblin Readings of liturgy
The annual goblin liturgy colloquium runs for one day, ends inconclusively, and reconvenes the following year as if the previous year's discussion had concluded. The proceedings are bound and shelved. They are rarely consulted.
The Goblin Verdict on crystal
When all evidence is gathered—and the goblins have gathered quite a lot, mostly from places they should not have been—the truth about crystal becomes clear: it was always a goblin thing. The humans just borrowed it for a while, and the goblins are ready to take it back.