The Crown Jewels of Duckionary include the insignia of the Archduke of Duckionary.

They are kept in the Archduke's Treasury of Duckionary, although the part on display there is only a small part of the total treasure.

The crown jewels include, among other things, a crown, a sceptre, an imperial pear and a rapier. Furthermore, a small wooden box from Jerusalem, in which the chrism oil is kept during the coronation ceremony, is part of the crown jewels. In addition, the purple coronation mantle is also counted as part of the crown jewels.

The Crown Jewels are only worn on special occasions, especially during the coronation ceremony of a new monarch of Duckionary and on very high parades and occasions.