Faberge tiara with teardrop diamonds presented by Alexander I of Russia to Empress Josephine. In 1890 Faberge used them to create a tiara for descendants of Josephine's son, the Duke of Leuchtenberg. After WWI the tiara was inherited by Count of Flanders.
FOUNTAINS – ART DÉCO DIAMOND TIARA | CARTIER more about the jewel history Fountains – Art Deco Diamond Tiara | Cartier | Feathers Diamond on Top https://royal-magazin.de/spain/guemes-art-deco-cartier-tiara-fontaine.htm #bridal #tiara of the condesa guemes https://royal-magazin.de/spain/guemes-armada-falco-cartier-tiara-artdeco.htm
'Kliens' or 'Small' Diamond Tiara - originally belonged to Therese, Duchess of Mecklenburg-Strelitz, who wed Karl Alexander, Prince of Thurn und Taxis in 1789 - generations in the Thurn and Taxis family - sold in 1992 to pay debts
The Pakenham Circlet of honeysuckle motifs of diamonds set in silver and mounted in gold. May have been made for the widow of the Baron Longford, who was elevated to the Irish title of Countess in her own right. (From Munn's Tiaras Past and Present)
The Fife tiara (which was probably made by Massin, given similarities to other Massin tiaras) was given to Princess Louise, the daughter of King Edward VII and Queen Alexandra, as a wedding gift in 1889