Queen Wilhelmina of The Netherlands and Duke Heinrich of Mecklenburg-Schwerin - 1901

[Lee-Z]

i'm not 100% sure, but is it the tiara she got as a gift for her wedding
third photo on this page
https://www.diamondmuseum.com/tentoonstelling/huis-van-oranje/huis-van-oranje/?lang=nl

more info on this site (in dutch, but i think google translate can help with translating
https://www.allthingsroyal.nl/koninklijkejuwelen/nederland/wilhelminashuwelijkgeschenk.php

 

[Stefan]

As far as i remeber Queen Wilhelmine wore the Stuart tiara in a smaller setting at her Wedding Day.