Gold jewelry is a very common precious metal in our life. Many people like to buy and wear gold jewelry very much. Some people pay great attention to the daily gold price, because gold is also a metal with high collection and investment value. Do you know what metals are more valuable than gold? This article introduces five metals that are more valuable than gold. Let's have a look. Five metals more valuable than gold
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1. Rhodium (read: Lao)
Rhodium is a silvery white hard metal. It has high reflectivity and is not easy to be oxidized. Even when you heat it to the melting point, it only temporarily absorbs the oxygen in the air and is released again during solidification. At the same time, the corrosiveness of rhodium is also amazing. It is insoluble in most acids and slightly soluble in aqua regia. The content of rhodium in the earth's crust is only one billionth, so rhodium is also the most expensive metal.
Usually, rhodium is suitable for the reflection of mirrors, searchlights and jewelry. It has excellent application value in the automotive field and other industrial fields.
Rhodium is usually produced in South Africa, Russia and Canada.
2. Platinum
Platinum, as we all call it, is a more precious metal than gold, but its output in the world is only one twentieth of that of gold, and its chemical stability is better than that of gold. Its density is 21.43kg/m and its melting point is 1773 ℃. It is a compact, malleable and non corrosive metal. Platinum is widely used in jewelry because of its bright appearance and better resistance than normal. Of course, platinum is also used in weapons and aviation.
Similarly, it is also produced in mineral processing countries such as South Africa, Russia and Canada.
3. Palladium (read: BA)
Palladium is a silvery white metal with soft constitution and good ductility and plasticity. It can be used for forging, drawing and calendering. Massive palladium can absorb enough hydrogen to make its volume become large, brittle and even break into pieces. Palladium under normal conditions is not easy to be oxidized and tarnished, so palladium is also involved in jewelry. However, at present, the production of palladium in the world is only about 8% of gold, which is deeply favored by international well-known brands. The value of a palladium watch on the market may reach hundreds of thousands or even millions of yuan.
Palladium is also produced in North America and South Africa. Russia and other countries.
4. Plutonium (read: Bu)
Plutonium is one of the important materials in the atomic energy industry and can be used as nuclear fuel and fission agent for nuclear weapons. When it comes to nuclear weapons, the value of this metal goes without saying. The content of plutonium is extremely rare and the price is even higher. According to statistics, the price of each gram of plutonium is about 4000 US dollars.
5. Iridium (pronounced: Yi)
Iridium is one of the most dense metals in the world. It has high melting point and high corrosion resistance. This metal is processed from platinum ore and is one of the by-products of nickel. Iridium is mainly used for writing nibs, jewelry, watches and other industries. Its largest producer is South Africa.