I tried to look it up and nothing comes up for the item numer, unfortunately.
How much do they weigh? If they are an average 1.25" hoop, industry-standard hollow, they would probably weigh around 1.5grams each. If they are a heavier gauge they could weigh as much as 3 grams each. I have hoops that weigh at both of those ends of the spectrum.
I hate to see Milor selling that resin junk, as they were a company that made really nice Italian gold jewelry for many years. But I do recall going through the 'recently aired' of a 'gold' show a while back and I did see one that was shown as resin-filled and there was a macro picture showing that it was Milor item.
I'd have to say that if it is hallmarked 14k/resin - it IS resin-filled. 