I've just found out that the seemingly ultra-rare material, "Meteor Mote," is indeed implemented in the game. I've just talked to someone who had one and managed to sell it for an instant 10k.
One problem: he couldn't remember where he got it. T_T
I didn't make a thread asking about this earlier because I didn't think the Meteor Mote was even IMPLEMENTED YET, but now that I know otherwise, I will ask: does anyone know what enemy drops it?
Probably from a treasure box