Board Thread:Show-Related Questions and Answers/@comment-24942479-20151207104557/@comment-27284036-20151222034031

Killian Jones wrote: Not really. Mr. Gold recreated the dagger using the whole sword, so all of the Holy Grail metal might be forged into the Dagger now. I think you might be right about this because, on second thought, there is no evidence to suggest the two were separated...in fact, Excalibur needed to be whole in order to take all the darkness out of Dark Hook in the winter mid-season finale.

So maybe Hook was referring to another time he stole the dagger (a very confusing line, I might add) and the new dagger is made up of all the Holy Grail metal.