The 28th is a bad weekend for anyone in the UK as it is a Holiday weekend. I for one cannot make it this weekend as I will be away. Rescheduling the gem quest with around a weeks notice to the NEW date just simply isnt fare. Lots of people that play have busy other world lifes and simply cannot rearrage things at the drop of a hat.
I purposly arranaged this next weekend so they would not clash with the gem quest. I suggest that you drop this quest entirely and reschedule it at the end of the current schedule. its the only fare thing todo.
Written by my hand on the 20th of Eleuthral, in the year 1121.