For the breakthrough to the Divine Rank, of any Tradeskill, the conditions were fewer than the Grandmaster Rank, but were even more grueling to achieve in practice.
Firstly, one needed to create a Divine Rank Tradeskill technique, then they needed to actually have an organic Divine Source Origin (or alternatively, but way more costly, Divine Crystals), and finally, craft a unique Divine Design created by themselves.
For others, the sheer foundation required was hellish. The Tradeskill technique at the Divine Rank was nothing like the one at the Grandmaster realm. As stated before, a Grandmaster technique framework was like a single pixel on a screen, or an individual polygon of a 3D model, whereas a Divine technique was an entire screen worth of pixels or a fully rendered 3D model.