...
Your options are:Option 2 is not recommended, because you'll first need to find a guild store that sells them, and you'll want it for a reasonable price. While option 1 only costs 5 seconds. And one day of not finishing writs isn't going to kill you (I hope) ...
- Abandon quest, start new writ tomorrow (recommended)
- Buy Calcinium from guild stores.
What level is your character? The character level was the gatekeeper for Craglorn in that you had to be L50 to get there before. Have they been to Coldharbor, and not just by porting up there, but being sent by the quest Messages Across Tamriel? Which means of course having finished the Alliance Zone Quests for your Alliance.
These two factors had a big impact on what level equipment writs you would be asked to do before One Tamriel. While these restrictions should have been removed, they have not.