This question is a disambiguation of the related question on the NeurIPS 2019 MineRL Challenge. Since (thanks to investigation by @Mesa_optimal) it is possible to discover a diamond in the ObtainDiamond environment as opposed to only crafting it, this question is a harder version of the general "obtain" question.
Will an RL agent successfully obtain through mining a diamond in the 2019 Minecraft RL challenge?
The RL agent must obtain the diamond through the act of mining (i.e. by using an iron or diamond pickaxe on a vein of diamond ore). This tests closer to the core operationalization of whether an RL agent can complete a series of subgoals in an open world environment.
Note that Training in the competition is limited to a wall clock time of 4 days (96 hours), on a single NC6 v2 Azure instances with 6 CPU cores, 112 GiB RAM, 736 GiB SDD, and a single NVIDIA P100 GPU.