Essence Laboratory
You can access the new level through the laboratory in Academy Halls
The Essence laboratory enables you to craft bichromatic essences from monochromatic ones.
Bichromatic essences have two ability modifiers instead of one.
So you can power scaling and procc chance combined in one essence.
They also count as two essences for the color bonus during avatar compilation.
You can open the dialog while standing in front of the desk.
You can select a recipe, drag in the required essences and craft your new essence.
I am looking forward to add special trichromatic essences soon.
Those will have special effects added to them so stay tuned :)