Gold Jewelry That Means The Number Of Carats?

System "carat" was invented in the fourteenth century in England to facilitate the trade of gold.

Carat (ct symbol) is a unit of measurement of purity of precious metals such as gold. In this context, one carat is 1/24th of the total mass of an alloy.
For example, 14 carat gold means that 24 grams alloy, there are 14 grams of pure gold. The 24 carat gold is "pure." This form of gold - very rare - is primarily in the form of ingots.

The term 18 carat gold means that 24 grams alloy, there are 18 grams, or 75.01% of "pure gold." It is also called gold 750/1000 °. The 18 ct gold jewelery are usually hit the punch representing an eagle's head and punch "750" jewelry for more than 3 grams. Only punch "750" appears on the jewelry less than 3 grams.

The term Gold 14 carats in turn means that 24 grams alloy, there are 14 grams, or 58.5% of "pure gold." It is also called gold 585/1000 ° punch that is is a shell Saint Jacques.

Finally, as you probably guessed, the term implies a 9 carat gold alloy containing gold 9/24eme. The 9 carat gold jewelry tend to darken, due to their low gold content. They are therefore relatively rare on the French market

Regarding the color of gold, it varies depending on the alloy produced.

The 18K yellow gold is composed of 75% pure gold, 12.5% ​​silver and 12.5% ​​copper in order to obtain the best compromise color / mechanical properties.

The 18K rose gold is composed of 75% gold, 5% silver and 20% copper which gives it its color.

The white gold or 18K white gold is 75% gold, silver, copper and palladium. White gold actually rather gray, is covered with a thin layer of metal, rhodium, to give it its white color. This layer deteriorates with time and must be renewed to a jeweler with a rhodium plating.

There are many websites that practice today the purchase of gold jewelry. It should of course go to an organization demonstrating professionalism in this field. A team of experts who knows his jewelry business must learn about the gold content of your jewelry before estimating its resale value.