Iben Fahd's Sanctum gem issue

I had a problem that we may add to the topic. After i complete killing all mobs in sanctuary and open all chests i didn’t receive legacy of haordrims jewel. I did this 4 times wiech different hell and inferno levels. I also open all chests when my familiar was on a quest and when it wasnt on a quest. I guess i get stuck here and need help :confused: