The so-called K platinum and platinum in the market are actually alloys of gold, nickel, copper and zinc. Or gold and silver, or alloys of gold, silver and copper. It also includes the gold-palladium alloy commonly used by masters in Taiwan Province Province. Its code name is WG (Platinum), which means Platinum. In the early days, 226 (60% gold, 20% palladium, 20% copper) was used to represent platinum, and 600/ 1000 pure gold, which is also commonly known as "material", which means silver-white metal plus gold instead of nickel alloy without gold. Generally, foreign stamps are commonly used; WG585( 14K), WG750( 18K) or only numbers represent gold content. \x0d\ Platinum is also called pure white gold, positive platinum or true platinum. But pure platinum is soft, and the addition of ruthenium, rhodium, palladium and other metals will increase its hardness. \x0d\ platinum alloy \ x0d \ refers to the alloy of platinum mixed with other metals, such as palladium, rhodium, yttrium, ruthenium, cobalt, osmium and copper. Although the hardness of platinum is higher than that of gold, it is not enough for inlay. It must be alloyed with other metals to make jewelry. \x0d\ Pt-Ru alloy and Pt-Ir alloy are widely used in jewelry industry. In Europe and Hong Kong, platinum and cobalt alloys are used for casting. In Japan, aluminum strip is made of platinum (85%) and palladium alloy. The international seal of platinum ornaments is the words Pt, Plat or Platinum, which is expressed by a few thousandths of purity. For example, Pt900 indicates the purity of 900% O. In Japan, the specifications of platinum ornaments are marked with Pt 1000, Pt950, Pt900 and Pt850. \x0d\ Common gold in the market, palladium gold and platinum-palladium alloy. Marked with Pd 1000, Pd950, PD Pd900 \x0d\ \x0d\ \ platinum is an element and platinum is a mixture. Platinum: Platinum is chemically more stable than gold and its price is higher than that of Huang Jingui. Used to make high-end jewelry. The "pt900" or "pt950" seen on jewelry products represent that the platinum content in jewelry is 90% and 95% respectively. \x0d\ Platinum, commonly known as platinum, is pure white. Compared with gold, the reserves of platinum in nature are scarce, so its price is higher than that of Huang Jingui. Platinum can keep the true colors of white diamonds, and it is very strong. It is the best material for setting diamonds, and it is diamonds that make platinum a superstar among precious metals in jewelry. In China, the colors used in jewelry inlay are mostly Pt950 and Pt900, and Pt900 is the most commonly used. \x0d\ The total content of platinum and palladium in platinum alloy jewelry is not less than 950% specified in the Regulation and Naming Method of Jewelry and Precious Metals Purity. Platinum jewelry is crowned with platinum or Pt with a purity of one thousandth. For example: 990, Pt990 or enough platinum. \x0d\ foot Platinum is soft, so if you want to set diamonds, you must alloy it. Even if 5% alloy is added, Pt can be hardened to meet the processing requirements. Part of the added alloy component must be platinum group metal. \x0d\ The allowable purity in Japan is 1000.950.900.850, and there may be a slight (0.5%) negative difference. The purity of 850Pt is generally used for chains, and Pt900 is the most commonly used purity. As Japan is the most important export market in Hong Kong, Hong Kong adopts Japanese standards. \x0d\ The United States stipulates that if the purity is called Pt, it must contain at least 50% platinum and 95% platinum group metals. Purity with platinum content higher than 95% can be marked with Pt. Jewelry with platinum content between 75% and 95% must also be marked with platinum group metals. Jewelry with platinum content between 50% and 75% must be marked with the name and content of platinum group metals. Such as 585 platinum and 365 palladium (585 platinum and 365 palladium). Only the United States allows "K platinum" alloy. \x0d\ specific gravity of platinum-palladium alloy: pt950-20.64pt900-19.88pt850-19.18 \ x0d \ k Difference between platinum and platinum. Strictly speaking, K platinum cannot be equated with platinum. Platinum is a natural white precious metal. At present, it is the highest price among all precious metals in jewelry. All platinum ornaments on the market have the symbol "PT", which is the English abbreviation of platinum. Platinum is a white alloy made of gold and other metals. The so-called 18K platinum is actually composed of 75% gold and 25% other metals. Therefore, K platinum cannot be marked with the "PT" mark, and only gold and purity can be marked according to its purity. For example, 18K platinum can only be stamped with "18K" and "G750". So, how to simply distinguish the two? First of all, it is more reliable to buy these precious jewelry in big shopping malls. The most important thing is to read the label clearly and see whether the jewelry is marked with "K" or "PT". \x0d\ When purchasing platinum jewelry, the operator should be required to issue an invoice, and the invoice should indicate whether it is platinum or white 18k gold, and it is best to indicate the weight of the jewelry, so that it is easier to claim compensation in case of fraud.