Having A Gemstones that are worth 7kk each completely breaks the mechanics of the game.
It's impossible to get A-grade gear, except for players who farm epic bosses. This leads to no difference between having levels 52 and 61, since it's much cheaper and better to buy +6 B sets. Of course, there are also +6 A sets, but only a few people have them.
This issue cascades further. It completely breaks the crafting of A-grade gear. No one would spend 600kk on Gemstones to craft A-grade weapo