What are the best gem stats for lategame pve?

[Lapiy]

I Just got an atk power 25 gem from crafting and wondering if that was the best version there was for crafting or does it go higher(other gems like the 170 lifesteal as well).  It sells for alot so I wondering if it was the best you could get in the game currently or should I sell it and wait for people to craft better ones. 

[AkaneTendou]

that is one of the best you can get so far! Use it or sell it for 20+ gold

[AkaneTendou]

idiots are selling addition damage alongside those att pwr ones and they don't even compare. Attck power is much better! It's like a weapon transformation in stats.