Goblet of Fire was made in....
Hermione is fascinated by the Goblet and convinces Harry to sneak her down to look at it after the flame has gone out - maybe there is a way to get him out of the tournament?
When she recognises the types of runes inscribed on it, even faded and worn as they were, a suspicion forms.
She performs just two charms to cement her hypothesis, a simple one to determine its age and a more obscure one to find where it was made. The latter was generally useless in moder times and ignored as it only gave a general area and the number of artifacts that came from 'London' or 'Paris' meant it usually didn't help narrow things down.
But this time it did. Age = 2012 years, location = somewhere in the region of Mount Tabor.
A weight settled in her stomach that quickly hatched into a swarm of caffinated butterflies. When she told Harry the results - he was busy keeping watch - he blinked, then immediately filled the cup with water and offered it to his best friend.
If the cup gave life then maybe it could get them through this tournament in one piece!