I did some T6 gem mining awhile ago and at the time I was getting over 400k xp/hr. I’m not sure of other experience rates across the game, just tossing in the info that I have. Requires some startup so I’m of no help on the first few levels. Note that this can be done while you are crafting rocks/stones - trap doors mint for a decent value if you have the patience and plots for a large array of crafting tables and such.
- this comment in particular I figured you needed 46 skill points to do it, and more to make it faster.