In the peninsule district, the 'boss' there, is an intellect devourer. If you kill him, he will drop ironwood and some other things.
The adementite: in the Blacklake district, well, the part between the city core and the district in, is a tower. In that tower is an orc/half-orc, i forgot. He drops the adementite, and there is a guy a the gate, who wants it head.
Diamond: I have no id where i found it.
Gargoyle Skull: Don't know if it is in chapter 1.
