Luxembourg has among its collection a topaz (possibly citrine, but it doesn’t matter for our purposes here) and pearl tiara worn by quite a few members of the family.
Hereditary Grand Duchess Stephanie wore it to Sweden #3’s wedding.
Grand Duchess Maria Teresa wore it during a 2012 visit to Germany but mostly wore it in her younger years.
And Grand Duchess Josephine Charlotte even obliged us by wearing the tiara in traditional position as well as almost in bandeau position. I quite like it farther forward, but don’t think that would fare well in today’s times.
What tiny tweaks would you make to this tiara to make it more perfect?