I have spent a rather long time looking at the brooch(es) worn in the photos you posted, but I still have not been able to reach any conclusion. It could be the turquoise brooch from my original post, but something tells me that it is not. Though, as I said, I have not been able to make up my mind about it still. The photos are probably as clear as we will get them, but still it is too blurry for my eyes to distiguish the brooch worn by the Princess in them.