<name>, there is a pressing matter I hope you can help with... both materially and spiritually. Allow me to explain.
Within the depths of the Scholomance in Lordaeron is a chamber called the Great Ossuary. I need to complete a device that would pierce the shadows of this horrid room. To finish what I have started, I need two diamonds: an Azerothian and a Pristine Black. These are not trivial items, I know - I just don't have the resources myself.
Could you provide me with one of each?
Your generosity is unrivaled, <name>. I thank you for your kindness.
I will be able to finish my divination scryer now, and I should be able to fashion more without further need of diamonds... perhaps you would be interested in helping me in its use? It is for a most important task, I assure you... one that left unchecked could spell unmitigated disaster for the spirit realm!