Fleur de Lis

A fleur de lis (or plural: fleur de lys) is a decoration in the form of a stylized lily flower. It was used in the coat of arms of many monarchs, especially by the French monarchy prior to the French revolution. It remains a popular design motif to this day.
Victorian Diamond Fleur-de-Lis Pendant/Brooch.

Victorian Diamond Fleur-de-Lis Pendant/Brooch.