I just came across an old photo on Twitter showing the guests attending the wedding of Duke Adolf Friedrich of Mecklenburg-Schwerin with Princess Victoria Feodora Reuss in 1917. It is a photo I had not seen before and I am rather intrigued with the identity of the guests, but also the jewels. Many of the ladies in the group photo are wearing tiaras and other splendid jewels. It would be interesting to see if we could identify them all. The Duke's younger brother was Prince Hendrik of the Netherlands, married to Queen Wilhelmina. I belive he can be seen at the very top of the stairs in the photo. His wife is not to be seen though:
The photo was found on the excellent "Almanach de Saxe Gotha - Handbuch des Adels" account:
https://twitter.com/AlmanachGotha/status/1769309276978270499