Whodunnit - crystal decanters and glasses

Went to the ReStore and they must have been putting things out for St Patrick's. I doubt these are Cork glass, but some might be old Waterford. Nothing's marked. The glasses to match the decanters are in two sizes but otherwise the same. One alas has a bad crack, not that there are good ones, but the glasses were $1 for all three of the same size. I wasn't crying too hard. The photo of both decanters wouldn't upload, I forgot to resize it, but they're identical in design. The star-cut feet on the glasses appear applied, if that's any help.

 

Lovely decanter.

 

Thanks. The bottoms have age on them, but I have no idea who made them. My hunch is the crytal is Irish.