Nice Vitros, Dave - I don't think there is enough tan/brown on that first TriLite for an Aquamarine though. And I have seen a few Conquerors with a fair amount of chalk, it's pretty uncommon though . . .
Check out the this thread . . .
Just page through the thread or search the thread for "Blackies" to find pics of both main types and Anti-Blackies too . . .
I think the two on the left are Akro, and the upper right may be too, it looks like a brushed patch error. I'm not feeling Pelt on the lower right, either - they all may be dug Akros, IMO.