I really like the idea of the swinging diamonds, however I don't think it would work with the Vladimir unfortunately.
If you look at the Vladimir, the space between the circles is much narrower that the other example tiaras posted malluu, and so only very narrow, or small diamond drops could swing freely. As it is now, only the pearl drops swing due to the narrow nature of the gems. When you inspect the emerald version of the Vladimir you can see that many of the emerald drops are actually too big, and have to sit BEHIND the circles. This is illustrated in the picture posted below.
So for me personally, while I love the idea of a circle based tiara with freely moving diamond drops, adding diamond drops to the Vladimir would look just like that - a paste it together job. I wish it were not so.