Let's get back to the question though.
The ownership of the Narya had been passed from Cirdan to Gandalf voluntarily. But, have we ever looked at it from the perscpective of the Ring itself?
Quote:
"A Ring of Power looks after itself, Frodo. It may slip off treacherously, but its keeper never abandons it."
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This is what Gandalf said of the One Ring. But note that he meant it in singular, which can be taken as a general statement refering to ALL Rings of Power. Doubtless, the Three Rings were not made by Sauron, but they could definitely have the same characteristics as all other rings of power. If the Nine Rings made by Sauron and the One Ring granted lengthened Lifespan and Invisiblity, the Three Rings granted Wisdom and Strength. But that did not eliminate the possibilty of them looking after itself and seeking them master.
I believe that Narya, being a Righteous Ring, voluntarily "allowed" itself to be given to Gandalf. Cirdan's transfer of ownership just legitimized the transaction.