Moreover, there are only four kinds of precious metals in the international spot and futures trading market: gold, platinum, palladium and silver.
Palladium: symbol Pd, mainly made of natural cymbal. The color is silvery white, the appearance is similar to platinum, and it has metallic luster. Melting point 1555, hardness 4-4.5, relative density 12. Lighter than platinum, strong ductility, slightly harder than platinum (hardness "Mohs" palladium 4.8, platinum 4.3). Chemical properties are relatively stable, insoluble in organic acids, cold sulfuric acid or hydrochloric acid, soluble in nitric acid and aqua regia, and it is not easy to oxidize and lose luster under normal circumstances.
At present, although the international palladium price is cheaper than platinum, it is about 100 yuan/gram higher than platinum in history (200 1, 1, and the international palladium price reached 1, 094 USD/ounce in October).
Palladium is one of the rarest precious metals in the world. Only a few countries in the world, such as Russia and South Africa, produce less than 5% of gold every year.
Because of the lively chemical and physical characteristics of palladium in the international jewelry industry, the jewelry processing technology is difficult, it is easy to splash when melting, and the gold loss is great, so the domestic jewelry industry is rarely used to make and process jewelry. Recently, however, due to the foreign jewelry processing industry's mastery of its properties, a small amount of palladium has been processed into jewelry and decorative works of art, which has gradually formed a fashion trend. The seal of palladium ornaments in the world is Pd or palladium, which is expressed by a few thousandths of purity. For example, the purity of Pd950 is 950, and the specifications of PD ornaments are Pd950, Pd900 and Pd750.
Although platinum and palladium are equally scarce, in the international precious metals market, platinum is in short supply and palladium is in oversupply, so the price of palladium is lower than platinum. Whether palladium can be made into jewelry, facing this unprecedented topic, Ji Meng people began a long road of searching up and down. However, due to the active chemical and physical characteristics of palladium, jewelry processing technology is difficult, easy to splash when melting, and gold loss is large. So palladium is rarely used to process jewelry. However, Ji Meng people dare to innovate in technology and products, and dare to be the first in the world. Through continuous efforts, they successfully made palladium jewelry with palladium, which filled the gap in China and made palladium jewelry gradually become a fashion trend.