The Ring of Saruman?

[Findegil]

Well, but with a look around we find the Dúredain who had the abillity to put some of thier power into the images that they made (such as the faithfull stone). And they were surely incarnated beings with considerably less might than an Istar.
That means that Saruman did not need a ring to transfer power to an individual or an object. He only had to learn the technique.
Anyway, since I think, that the process of ringmaking involved the selfsame procedure of transfering some of the makers power into the ring, it seems clear to me, that Saruman need that ability before he made a ring.

Respectfully
Findegil