So maybe I'm not understanding how this works but when I complete a map and it does the gem award at the top of 1, 2, or 3 and I go back to main screen to upgrade runes, it shows I have zero gems accumulated. So then I thought, well maybe gem awards only apply if you hit a new high score on that level, aka net experience gained.. or that you have to beat your previous gem count high for that level... but no. I did both several dozen times and it still shows my gem count as zero. Any help is appreciated because I love the game but cannot compete with all low level runes.