Many thanks The Royal Watcher.

As ever Queen Maxima surprises us with her use of jewels! And to bring out such an elaborate jewel which has not been seen in its full splendour for such a long time!

The Instagram site on the Dutch Royal Jewels also has some detailed information on the devant de corsage https://www.instagram.com/p/BrOG2Itj8zW/

The Diamond bandeau never ceases to impress me with its elegant simplicity. (I am following our fellow poster, Erik's information in my choice of name as the diamonds are not rose cut. I wonder who coined that name? Not the Dutch royal court! I wonder what the court officials call it? Did Rene Brus discuss it in his book? Obviously I have not read it)