I would have liked this more if the diamonds had more clarity. For some reason, and maybe it's the cut or the lighting, they look chipped or not very clean. Also, I'd like to see the diamond in the foreground with better focus.
I with such a small number of diamonds I would have gone lower and focused on the front diamonds, but that is just personal preference. I think you have too much saturation bleeding. The big blue blobs on the diamonds really hurt the photo.