Apatites are battlefield Gem gatherers. Made in Era 2, since resources were scarce so they needed to harvest and save Gems whenever possible, their job was to collect poofed gems and bring them to safety. A special ability that would aid them in that is an energy field that can repel attacks so that they aren't poofed themselves.
This Apatite, however, had a defect due to which she could neither conjure up that field nor - even worse so - store other gems in her own. This is precisely the cause of being sent on the "mission" along with Agate and other defective Gems, and what got her shattered - she couldn't defend herself after all.












