golden
The history of gold is the history of human civilization. Thousands of years ago, when people discovered the first natural gold particles, gold was considered as a valuable material. Because gold has beautiful color, very stable chemical properties and good mechanical properties, it is the best preservation item, and gold jewelry occupies the most important position in all jewelry. Now, the biggest consumption item of gold is jewelry making. 1970, the world's gold used in jewelry production reached 1062 tons, accounting for more than 77% of the world's total gold consumption in that year. 1978, the global gold processing capacity of various industries was 1400 tons, and the jewelry industry was 1000 tons. In modern jewelry, gold can be alloyed with different metals to obtain various colors, such as golden yellow, aquamarine, pure white and blue.
silver
Besides gold, silver is the most widely used metal in jewelry making. There are two main reasons for using silver in jewelry industry: one is that it is more economical to use silver, and the other is that silver has beautiful white color and the strongest metallic luster, so it can achieve better light and color effect when used in jewelry. For example, using silver as the support of transparent gems such as diamonds can enhance the reflectivity and make gem jewelry look brighter and brighter.
platinum
Platinum is platinum. This is a very precious precious metal. Compared with gold and silver, it was used in jewelry manufacturing later. Since19th century, platinum has been widely used in jewelry manufacturing because of its bright white color, excellent ductility, wear resistance and acid resistance.
porpezite
Palladium: element symbol Pd, which is one of the platinum group elements. Similar to platinum, it has excellent characteristics and will not be oxidized and tarnished in air under normal circumstances. It is an extremely rare precious metal resource.