|Empress Eugénie's Pearl and Diamond Tiara|
|Empress Eugénie, as painted by Winterhalter|
|Princess Margarethe of Thurn and Taxis|
|Princess Glora of Thurn and Taxis, on her wedding day|
Duchess of Angoulême's Emerald Tiara. We can see it, though we can't see it worn - a happy medium considering the other options, I suppose.
Is this your favorite French royal tiara?