Austria—Crown of the Austrian Empire

The regalia and vestments are worn by the Holy Roman Emperor, and afterward by the Emperor of Austria, during the coronation ceremony and other official ceremonies known as the Austrian Crown Jewels. The collection spans almost a thousand years of European history, from the 10th to the 19th century. The Imperial Treasury of the Hofburg Palace in Vienna, Austria, houses it. It is made up of the world's most valuable gems, including the 36-carat Der Blue Wittessbatcher or Wittelsbach Diamond, which is valued at more than 16 million dollars.

The Crown of the Austrian Empire is unquestionably a work of art, made of pure gold and set with rubies, sapphires, pearls, zircons, and diamonds. One of the crown's distinguishing parts is the base, which has two rows of pearls totaling more than fifty individual pearls. Another notable feature is the blue-green emerald at the crown's peak, which is thought to represent paradise. This crown is thought to contain about 200 diamonds in total, making it one of the most expensive crown jewels in the world.

Estimated Value: $16 million