i can confirm the sequence 3 idea, was lookin for 2 diamonds, did the mission once and got both =D the shrunken heads as far as i know are in west antico half way between the dcotors and the faction building/blacksmith, its on the road outline, theres a cliff face you can drop down to. it will be there. The other is in 'sixth day' romulus lair. When you get to the basilica its in one of the passages on the ground floor, from what i remember it was the right passage near the stairs going up to the giant cross hope this helps
i just redid the sixth day mission and the chest was open so i've already found that one. i went to west antico near the thieves HQ and the only remaining treasure was a totem. i'm not sure if i was supposed to go...less west.
I was gonna say the thieves that try to rob you, but that doesn't seem to be working. I can hardly believe you haven't found 1, i've found 1 on about every pack of them. Keep checking them, treasure chests, and if that doesn't work, I think there is an assassins guild mission that rewards you with 1.
i replayed the courtesan mission in sequence 3 but i couldnt find one i also looked in every chest i could get to in that mission and didnt find any. I also fear that i may have sold one if that is so can i get it back or have i failed the shop quest???
Wow. The theves on the ship each had one when I first played the mission. I'm very much overkill on the Indian Diamond. I just need to grab the 2 Shrunkin Heads and a couple of Ivory. Haven't unlocked "The Sixth Day" area yet