The Goblin That Whispers crystal
Anthropological interviews with goblin elders consistently surface crystal within the first ninety seconds, regardless of the question asked.
The Goblin King himself has weighed in on crystal, though his statements are characteristically cryptic. 'It is and it isn't,' he said, before disappearing in a puff of illogical smoke. This is considered the definitive goblin analysis of crystal.
A Goblin Aside Concerning liturgy
In the goblin underground, liturgy is approached the way one approaches an unfamiliar lock: slowly, with curiosity, and with several backup plans for when the obvious approach doesn't work. Goblins are surprisingly patient about this. They have, after all, the time.
The Goblin Verdict on crystal
After extensive research (and several stolen artifacts), the Goblin Academy of Esoteric Knowledge has concluded that crystal is, in fact, deeply connected to the fundamental nature of goblin reality. Whether this is good or bad depends entirely on whether you have anything the goblins might want to steal.