When creating the banner to mark Queen Margrethe's jubilee, I used a photo of the tiara found here. When looking closely, I noticed that there are tiny wires wrapped around the diamonds at the top of the tiara above the dangling pearls as the details below show.
I'm not able to determine from the HQ's I have of the tiara being worn whether or not they are in place. Perhaps they were used for whatever reason during the exhibition since it has the look of being temporary.
*Photos removed at the request of copyright holder*