Rings of Power talk!

[Inziladun]

Originally Posted by Galin

It's interesting perhaps, that for the revised edition Tolkien added (The Grey Havens, second edition of the 1960s) that Gandalf now openly wore Narya. Of course that could refer to some kind of magic, or that he wore it now in plain view on his finger.

If the latter, this might mean that Gandalf, as the Grey Pilgrim who was out and about more compared to Elrond or Galadriel, could not actually wear his Ring at certain times.

I don't think the Three had any sort of invisibility. That power is specifically associated with the rings in which Sauron had a direct role in making. Invisibility is the "realm of hidden things", the shadow-world of the Nazgûl. Sauron seems to have endowed the One, the Seven, and the Nine with invisibility power with that in mind.
Why would the Elves had wanted the Three to have it, even if only as camouflage for the rings themselves? When the Three were fashioned, Sauron's plot involving the One was not known. Therefore, the Elves would have felt no call for any secrecy surrounding the Three or their use.

I favor the notion that Gandalf simply did not openly wear Narya at all times, but as Galin notes, Elrond and Galadriel would have been far more secure in wearing their rings, ensconced in secure locations.