Here's a part of what the F1 screen looks like in gem-gen world:
I have more than ten times what shows here. Not many fetishes, because the disease handling is even more painful. Not that many bloodstones either because repeated armageddons (like ten of them? can't remember) made this turn 266 hard to find provinces with people to actually blood hunt in.
+1 to all what Calahan said.
And indeed, hammers are not gem-gens.