The Vertige ring is very cool but I have never seen it at a boutique. I think the Osmose ring complements you well, it's chunky. I don't know what the ring based on the Evelyn with a perforated H would look like compared with the Osmose, but one is flat and the other is chunky, it might be good to compare them if you can get the Evelyn-type ring.
For the difference in price between what I think the Osmose ring costs and what the CDC bracelet sells for, I think there is a lot of look from the CDC bracelet (which I have, so I speak from experience). The Boucle Sellier which I have had, is less look, more conservative unless you are talking about the Geant, the wide one, which is, like the CDC, a lot of look and always noticed (in my experience, as I have one of those).
That said, I think the Osmose ring looks handsome on you. There is a Osmose cuff which might be a desirable acquisition since you have the ring. These I don't have but they look scuptural and modern, so I would like to get them eventually.