For the last year, I have noticed a phenomenon where, at random, gems just vanish. Today, I was hording 496 gems for use in expanding the truly expensive expansion slots. I received 2 gems from a treasure chest and when I checked, I was now at 476. Can anyone of my fellow crafters explain why, or who is pilfering my stash? Oh, and why do the gems only seem to work when I restart my phone (another means in which gems disappear into the nether realms!