Originally Posted by Hitman075
Well can you help the rest of us out for were you found it. I have been scratching my head on this one for a while now
Sure, heres what you do. Go to the map in the guide section of the achievement list. Look very closely at the top left side of the middle square. You will see just a tiny piece of the diamond there. Since its on the border, its very hard to see, and impossible to see if your looking at a printed copy of the map. You made need to click on the map to make the portion your looking at larger, and thus the diamond easier to see. I haven't actually gone to pick it up yet, I will when I have time but I am sure this is where its at.