Geoff didn't sleep very well and kept focusing on the gemstones on the table. Zarco and his friend couldn't be dead. Or, at least, not gone. They were in those gems, right? Their souls must bound to the crystals. But usually a ritual of some form is needed to bind them to objects, as far as he knew. These gems just popped into existence from his view.
Are the gems actually like eggs for them? Like a phoenix being reborn? ... That just seemed silly, but to Geoff, anything could be possible at this point.