King Gem Refining/Crafting

[Mek]

Unless I am totally oblivious to this and have been blind, it would be great to have a way to combine the King gem drops to higher grades, just like creating higher grade regular arti gems. Since it is a bit easier to get the gems maybe require more of them to be used per upgraded level. IE instead of needed 2 of gem(2) to make one gem(3) make it require something like 6-8 and a few more chemicals or something. Maybe this is a good use for the two refine unique materials that drop of kings that isn't being used.