The Vladimir Tiara. 1890.
Made for Grand Duchess Maria Pavlovna, aunt of Tsar Nicholas II, the Vladimir Tiara was smuggled out of Russia during the Revolution by a British diplomat. In 1921, the tiara was sold to England's Queen Mary by Princess Nicholas of Greece and Denmark, daughter of the Grand Duchess. Queen Mary adapted the tiara to take fifteen of the celebrated Cambridge emeralds as an alternative to the original pearls. Queen Elizabeth II then inherited the tiara in 1953 from her grandmother Queen Mary.