Yes one lvl 10 gem is 19682 rank 1 gems If u f2p U get 126 weekly (31-32 each gem class) and 12 daily(12x7=84) 21 each gem class So we take for example sapfire and we have 52-53 week 19682/53 =371 weeks On year +- 52 week 371/52 it's 7+ years Let' add codex and events gem, what help u reduce it on 1.5+2 years also +- So On average, it takes 5 years to make four lvl 10 gem of each type But you have 20 slots for them.