The enamels represent heraldry paint that was used on the shields of battle, for decorative or reduce the effects of oxidation.

The word enamel comes from the Hebrew word "hasmal" which in Latin is translated as "smaltun".
According to legend the king, Porsena, ruler of Tuscany, which were used dishes coated with enamel and then derives the name of "porcelain", a well-made vessels.

Although according to historical records, was a French silversmith Jean Toutin, who discovered the enamels. In heraldry, the word enamel, including the colors, metals and linings.

In heraldry there are five colors: red, called "gules", blue called "azure", green called  "sinople", the black called  "sword" and purple "purple ". The color purple or violet is the characteristic of belonging to the universe of colors and metals.

We have two metals, gold and silver. The first is depicted in yellow and the second blank.

In English heraldry, there are 3 additional colors: orange, fawn and blood.

These names given to colors arises from the desire of the heralds, or kings
Weapons of differentiating colors that gave the masses to Heraldry.

When representing the shields in prints, use the technique discovered by Italian Jesuit, Father Silvestre Petra, where the red or "gules" is represented by lines made in "stick", or vertical. The blue or "Azure" was represented by belt lines, or horizontal ranging from one side of the shield. The green or "vert" through in-band or diagonal lines from right to left. The black or "saber" stick by perpendicular lines, and horizontal strip. The purple or "purple" with lines made in bar or diagonal from left to right. For metals, gold is shown by points regularly spread over the field of the shield. Silver is expressly leaving the field clean and without any signal.

Gold symbolizes as topaz gemstones. In the armories of kings is called "sun" in the armories of the nobility either Duke, Marquess, Earl, etc., is called "topaz" and the nobility in general "gold." The color gold represents the sun if it relates to the stars, Leo Gold represents the twelve signs of the Zodiac.
The gentlemen who carry this metal shields are required to allude or do good to the poor and defend their princes, fighting for them and giving his life if necessary.

 

The silver represents the pearl. Of the stars represents the moon signs of the zodiac, Cancer.
Silver means whiteness, purity, and those who carry in their arms are bound to defend and protect the girls orphans.

 

The color red, which in heraldry is called gules, represents the ruby. Represents Mars, Aries and Scorpio, zodiac signs.
The color gules represents qualities of courage, boldness and courage. Those who wear this color in their coats are required to assist, protect and defend the unjustly oppressed.

Blue (Azure) is the sapphire and symbolizes the signs of the Zodiac Venus, Taurus and Libra.
The blue symbolizes royalty, majesty, beauty and serenity. Those who carry in their arms, are obliged to help the faithful servants of the princes that are not paid for their services.

 

The sword symbolizes the diamond, his Zodiac sign is Saturn, Taurus and Virgo.
It represents the science, modesty and, sometimes, sorrow. Those who use this glaze on their shields are obliged to help the widows, orphans, the clergy and people of letters who suffer injustice and oppression.

 

The emerald symbolizes the sinople "green" and the zodiacal sign corresponds to Mercury, its meaning is the hope, abundance and freedom, those who hold this enamel on its coat are obliged to help the farmers in general and the orphans and the poor who are oppressed.

 

The purple represents the Amethyst, dignity, sovereignty, greatness and power. Those bringing these weapons are obliged to help the church and religisos.