Different types of gold colors

Yellow gold is the most common gold used in jewelry. It is necessary to know that although yellow gold is the same color as gold metal, but their purity is not equal. Pure gold that exists in nature is very soft and is not a suitable option for jewelry making. Therefore, it is alloyed with other metals to increase the hardness of the product.

The most common alloy used in jewelry is white gold. To achieve this color, gold metal is alloyed with metals such as palladium or nickel. Of course, this composition still has a shade of yellow in it. To make the gold completely white and shiny, a layer of rhodium is applied on it. Since some people are allergic to nickel, instead of nickel, palladium (from the group of platinum metals) is used. Platinum is more expensive than nickel but is less likely to cause allergic reactions. If palladium is used in white gold, there is no need for rhodium plating because palladium gives a kind of gray color to the gold. Usually, when the rhodium coating is worn, the gold will show a dull yellow color.

They use copper metal to make rose gold. They alloy gold and copper and create this pink color. The more copper, the more rose gold it will be. This gold is also known as "red gold". Of course, if less copper is used in its composition, the color of the alloy will be pink, which is also known as "pink gold". Rose gold is more modern than today's yellow and white gold, and you can buy it in jewelry stores. Its price is not different from yellow and white gold.

Black gold is gold that has a layer of ruthenium coating on it to make it stronger. Of course, gold metal can be darkened in various ways. One of the most common methods is to use black rhodium plating. Another way is to blacken the alloy under various chemical reactions. The color of other metals such as cobalt, copper, titanium or iron can also be blackened by heating and oxidizing. Another way to make black gold is to oxidize the metal and then add a rust or patina to the metal.