When I went to the gold store yesterday, the clerk said that platinum is divided into palladium and platinum. Is this right? Help me explain the platinum, thank you
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The difference between palladium and platinum is almost indistinguishable with the naked eye. Their colors are very similar. If they are made into jewelry, the difference between rings will be more subtle. Apart from the difference in price, other aspects are difficult to distinguish, Let's make an in-depth comparison: after reading it, you can judge which is better than palladium according to yourself:
1: compare the difference between palladium and platinum in terms of physics
1: platinum is what I generally call pure platinum. Its symbol is PT. The physical color is silver gray white, the specific gravity is 21.35 at normal temperature, the melting point is 1700 ℃, and the Mohs hardness is 4-4.5 degrees. In addition, the chemical properties of platinum are also very stable. At present, except aqua regia, it is basically not corroded by strong acid and strong alkali. It is necessary to remind that pure platinum is very soft. It will be very hard and wear-resistant only after adding a small amount of other metal elements such as palladium, rhodium and ruthenium. Unlike platinum, palladium is naturally very hard and wear-resistant
2: palladium is also an important element of the platinum group. It is not easy to oxidize under normal conditions, and can be exposed for a long time without losing luster easily. However, at a temperature of about 400 ℃, a layer of oxide will be produced on the surface, and when the temperature rises to about 900 ℃, the original luster will be restored
2: differences in value, price and other aspects:
1: in the eyes of many friends, platinum is regarded as the most fashionable and excellent precious metal for making jewelry and rings, which is also good. There are platinum jewelry products everywhere in the market, and the price is high. It can be said that the value is very high. In contrast, palladium is cheaper, and I only heard about "palladium jewelry" in recent years. In fact, palladium is the most suitable metal for jewelry manufacturing from the physical properties [it has almost the same properties as platinum, or even better]. However, in addition to being suitable for making jewelry, palladium is not as widely used as platinum in chemical, mechanical, electronic and other industries, so its price is always lower than platinum. In short, palladium is the most suitable for making jewelry rings, while platinum is more widely used
2: as mentioned above, pure platinum is not suitable for making jewelry without adding other auxiliary elements, because its texture is very soft. It is only after adding other elements that it becomes a hard, wear-resistant, noble and fashionable ornament on your hands. Palladium is naturally hard and wear-resistant without adding other elements [in fact, it is still necessary to add a small amount of metal elements, so that its properties will be better]. In contrast, jewelry of the same weight and workmanship:
palladium jewelry: purer than platinum, lower price, and almost the same in other aspects
platinum jewelry: the price is relatively high and the purity is lower. However, the brand and reputation are far higher than palladium [palladium has only recently started to make jewelry in large quantities]
after reading, you should be able to distinguish between palladium and platinum. What is the difference Of course, it mainly refers to when buying jewelry.
Platinum is platinum, a silver white precious metal element with stable chemical properties. It is used for corrosion-resistant chemical instruments and jewelry. Platinum also means silk and gold. Palladium is a member of the platinum group, silver white, symbol PD, specific gravity 12, lighter than platinum, strong ductility, slightly harder than platinum, insoluble in organic acids, cold sulfuric acid or hydrochloric acid. But dissolved in nitric acid and aqua regia. It is not easy to oxidize and lose luster under normal conditions. Oxides will be produced on the surface at a temperature of about 400 ℃, but the luster will be restored when the temperature rises to 900 ℃. At present, palladium is cheaper than platinum. The jewelry industry uses it alone or as a component of gold, silver and platinum alloys. Sometimes ruthenium is added to increase its hardness. Gold, palladium K gold and platinum, palladium alloys are common in the market. The specifications are marked with pd1000, pd950 and pd900 platinum, also known as pure platinum, pure platinum or true platinum. However, these terms are unreasonable and easy to be confused with white gold. Its symbol is PT, silver gray white, with a specific gravity of 21.35, a melting point of 1700 ℃, a Mohs hardness of 4-4.5 degrees, a chemical stability, and free from acid and alkali corrosion except aqua regia
pure platinum is relatively soft, adding ruthenium, rhodium, palladium and other metals will increase its hardness. The South American Indians made platinum jewelry as early as the 15th century, and the Europeans did not start to use it until the middle of the 19th century. At present, China is the largest consumer of platinum, The platinum imported each year accounts for more than 60% of the world's total output. The world platinum spot price trading unit buying price selling price rise and fall amount update time: RMB / g 337.71338.59 2010-02-26 16:59:00 USD / ounce 1541.001545.00 2010-02-26 16:59:00 Shanghai Gold Exchange platinum price (RMB / g) The latest price of the variety: the opening price, the highest price and the lowest price rose and fell. Yesterday's closing price: total trading volume update time: pt99.95349.50349.00350.00349.001.6044.0072.00002010-02-26 14:51:21
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Platinum is platinum
the price on January 9, 2010: qianzu gold / au999:306. Platinum / pt950:388, platinum / pt990:408, platinum / pt999:428. Palladium / PD varies from place to place. It's not easy to sell. It can be found in the 100-240 range
Palladium is platinum platinum and platinum are not the same concept. The difference between platinum and platinum: 18K platinum refers to gold jewelry with 75% gold content and white color, while the remaining 25% is other white yellow metal, engraved with 18K or 750 marks. Platinum PT900 refers to platinum jewelry containing 90% platinum, the remaining 10% is other precious metals, and the content of platinum and palladium reaches 950%. The mark is PT900
pt950 refers to jewelry containing 95% platinum, and the remaining 5% is other precious metals, with the mark of pt950. The metal composition is completely different. On the list of chemical elements, one is gold and the other is platinum. Platinum and K gold can be distinguished from each other in the following points:
platinum is a natural pure white metal. K platinum is an alloy of gold and palladium, nickel, silver and zinc, so it is also called K white gold
platinum is rare, and its annual output is much less than that of gold, so it is more precious
the density of platinum is high. A piece of platinum jewelry is 20% heavier than a similar piece of K platinum jewelry
platinum is resistant to strong acid and alkali corrosion and oxidation, and its chemical properties are more stable than K platinum
and platinum is only 18K, not pure because it must be mixed to show white ~
platinum jewelry is marked with "PT" mark and fineness. For example, "PT900" refers to the jewelry platinum products, and the platinum content is 90%. The mark of K platinum, such as "18kwg", is mainly marked by its gold content. Today, the platinum price is about 340 and the reference gold price is about 220. You can refer to this website gold/ Of course, this is the price of pure metal. If you make jewelry, it will be more expensive. The brand value will be included