Grand Duchess Maria Pavlovna of Russia (1854–1920) was considered the grandest of the Grand Duchesses. She married the third son of Alexander II of Russia, Grand Duke Vladimir Alexandrovich of Russia (1847–1909) in 1874, being one of the very few princesses with Slavic patriline to ever marry a male dynast of the Holstein-Gottorp-Romanov. Her collection of jewels was one of most fabulous collections to have ever been assembled.
Grand Duchess Elizabeth Feodorovna of Russia (Elizabeth Feodorovna Romanova, Russian: Елизавета Фëдоровна Романова) canonized as St. Elizabeth Romanova (1 November 1864 – 18 July 1918) was a German princess of the House of Hesse, and the wife of Grand Duke Sergei Alexandrovich of Russia, fifth son of Emperor Alexander II of Russia and Princess Marie of Hesse and the Rhine. In 1918 she was arrested and ultimately buried alive by the Bolsheviks.
18 March 1314, Jacques de Molay, last Grand Master of the Knights Templar, was burned at the stake in front of Notre Dames in Paris, marking the end of the Poor Fellow-Soldiers of Christ and of the Temple of Solomon.
The Marie Antoinette diamonds. The original earrings were owned by Marie Antoinette, the queen of France; guillotined in 1793 during the French Revolution. Said to be a gift from her husband, King Louis XVI. According to one legend, she had them with her when she was arrested fleeing the French Revolution in 1791. Grand Duchess Tatiana Yousupoff of Russia later acquired the earrings. They stayed within her family until 1928.
Karoline Reuss zu Greiz: The betrothal of Princess Caroline and Wilhelm Ernst, the reigning Grand Duke of Saxe-Weimar-Eisenach since 1901, was announced on 10 December 1902. At Buckeburg Castle (the home of her uncle), they married on 30 April 1903. Caroline was reportedly very against the match; at the last second of the wedding, she attempted to draw back, only to be persuaded most forcibly by Emperor Wilhelm II and Empress Augusta Viktoria to proceed with the marriage.
The Luxembourg Empire Tiara Coming in at number 12 on your list of favorite tiaras we have one of the largest diadems in use today, the Luxembourg Empire Tiara. Composed of massive amounts of diamonds in the Empire style potentially dating from the early 19th century, it earns its name on scale alone.