Finally saw it! - The Cane and the Room.

[Carol]

Carol earlier:
> > I think they'll have to cause him to react to the other Horcruxes, including Nagini, as he did to the ring 
> > (which, in the film, is still a Horcrux when Harry encounters it).
> 
> 
> zanooda:
> 
> I thought the Ring was not a Horcrux anymore, like in the book...
>
Carol responds;

There was no mention of DD destroying it (it didn't appear to be broken, and, IIRC, we couldn't even see the stone), but the ring acted in some way that made Harry seem temporarily possessed. it clearly had *not* lost its powers, and DD didn't wear it to Slughorn's house as in the book. (I don't recall any distinction being made between its being a Horcrux and the curse that blackened DD's hand, either--and no indication that Snape's "timely action" had saved DD's life).

Carol, who thinks that the Horcruxes were perhaps the most inadequately developed aspect of HBP