Ok, nwm. It seems that those gems are not "free"

All gacha prices have been upped by 00....
So a 50 FG pull is now 5000....

Ugh.... I never like this system in games. Running numbers into tens of thousands and milions.
You know, instead of having 5 skill points per lvl, you get 50, but the cap is not 100 but 1000 etc. More zeros just make it unnecessary complicated looking.

Sooo yeah. ... Laaaameeeee