A diamond shield with arms.

As an accessory on the battlefield, people will naturally associate it with men and think it is not suitable for women to wear. Since the late Middle Ages, women who were qualified to wear heraldry began to wear diamond-shaped shields, but the first time to use such shields was uncertain.

It is worth noting that there is an existing English seal around 1347, which belongs to Joan, the daughter of Earl Henry and the widow of Warren, Earl of Surrey.

There are five small diamond shields in the complex seal design. The diamond shield in the middle has Warenne's coat of arms, the diamond shield on the side has de Barre's coat of arms, and the diamond seals on the upper and lower sides have English coats of arms-the mother of the Countess of Joan is Eleanor, who is the daughter of Edward I of England. The seal is also decorated with the design of the castle and the jumping lion, which was designed for Eleanor Castilla, the first wife of King Henry.

In Britain, France and low countries in the15th century, the diamond-shaped emblem has become a platform for single women to display their heraldry, so it can continue to this day, and the rough design has been replaced by the oval. However, although men sometimes use the oval shape, the diamond shape is the patent of early women.

Unmarried women simply pin their father's coat of arms on diamonds or oval seals, and sometimes there are blue bends and ribbons, which are symbols of virginity. /kloc-a heraldry expert in the 0/8th century believed that it was difficult for unmarried women to keep heraldry, so they should be combined with other heraldry.

Singles have the right to wear helmets, crowns and proverbs, but according to traditional heralds, neither married nor single women can wear crowns.

In Germany, unmarried daughters can wear a shield with their father's coat of arms, and the shield can be supported by a ring; In Scotland, the female leader of a tribe has the right to wear a crown on a diamond or oval seal.