In France

The French Crown jewels had, of course, like all those French rulers also had crowns, diadems and jewels, but after the French Revolution, a large part of the treasure of the Crown was given on sale or dispersed. The jewels that were able to be saved from this period are preserved in the Louvre, including the Regent diamond, the Sancy diamond and a spinel Cote de Bretagne, then the Emerald of Saint Louis and diamonds appartentuti to Queen Marie Antoinette in the French natural history museum.
Diamonds were used for different functions, as the French kings were not so prone to ritual crowns as the British.
Remains the Crown of Louis XV, but before he did other Kings had used the Crown from father to son, and these then were donated to the Abbey of St. Denis where Kings were buried to their death. Among precious objects in the Louvre are also preserved the sword used in the coronation of the Kings of France, who is said to be that of Charlemagne. In any case it comes from the period around the 10th and 12th centuries, or even older. A piece of treasure survived and dating back to medieval times is the Sceptre of Charles V, conserved at the Louvre, in gold, very long and with a statue of Charlemagne. Another object of the French Treasury is sceptre said the Main de Justice, made with a hand in ivory in the final part, with a gesture of blessing and this part in ivory is also attributable to the middle ages.