No, I couldn't mention it because it would reveal the way the two diamonds are obtained.
You gave me the idea to try to find I way I could mention it and not reveal the secret.
Thanks for the feedback! Honestly, it's a bit strange you haven't found any, but there's a bit of luck involved in finding them so I guess you were just unlucky. Every diamond has a different way to be found (looking around the map is not enough).
Glad you liked the concept, I woke up in the middle of the night and thought of it!