The emeralds in the mortal lakes, the uncollected souls, the broken radars, the demons stealing souls.
If these were emeralds, it made sense that they sold these to build it.
Katie stared at the necklace, horrified by the idea of looking at a soul and fascinated by the fact they looked like emeralds. Gabe turned away and started through the forest again.
The idea of emeralds swimming around in a lake was too much for Katie. She felt nauseous again at her overwhelming situation and stopped, leaning against a tree. What she would give for a sip of real water!
Gabe leaned across her to grab the bag with his weapons' polishing supplies. A necklace with two emeralds – identical to the one he'd given her to wear – dangled above her.