St. Edward's Crown, possibly the most renowned crown gem in the world, is ranked first on our list of the most expensive crown jewels in the world. Scepters with a cross or dove, orbs, swords, spurs, rings, columbium sindonis, and other items are included in the collection of jewels. The crown is distinguished by the world-famous and unrivaled 105-carat Koh-i-Noor diamond, which was acquired in India. The crown weighs approximately five pounds and contains over 400 precious and semi-precious jewels. 345 aquamarines, 37 topazes, 27 tourmalines, 12 rubies, seven amethysts, six sapphires, two jargoons, one garnet, one spinel, and one carbuncle are included in the piece. St. Edward's Crown is estimated to be worth $40 million by experts. Queen Elizabeth II wore St. Edward's Crown during her coronation in 1953, but she has only worn it a few times since then. The reason for this is the weight, which, according to the Queen, makes looking down during a speech practically impossible.

Estimated Value: $40 million

Maximilian I, the first monarch of Bavaria, now known as Germany, had this crown created of the most valuable gems, such as sapphires and diamond rubies. This crown is worth more than $17 million. The Wittelsbach Diamond or Der Blue Wittessbatcher also adorns the crown.

The Bavarian Crown Jewels are a collection of crown jewels manufactured for the Kingdom of Bavaria from 1806 until 1918. Emperor Napoléon I of France raised the autonomous German duchy of Bavaria to full kingdom status in 1806, as part of his massive re-ordering of Europe's geography. Maximilian I, the previous Duke of Bavaria who later became King of Bavaria, celebrated the occasion by commissioning a set of crown jewels for use by Bavarian monarchs. However, no coronation ceremony was held, and the monarch never wore the crown in public. When shown at events like the king's ascension or funeral, it was put on a cushion.

Estimated Value: $17 million

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