Diamonds are long-lasting, gold is precious, but which one is more rare? According to foreign media reports, although diamonds and gold are very precious, the rarity of the two is not the same on the earth. Although gold is much more rare than diamonds, natural diamonds that can be mined are rarer than gold. Ulrich Faul, an earth scientist and professor at the Massachusetts Institute of Technology, said: Gold is a heavy metal, one of the rarest elements on Earth, formed when a neutron star collides. Professor of Earth Sciences, Yana Fedochak, co-director of the High Pressure Geological Research Laboratory at Dalhousie University in Halifax, Nova Scotia, Canada, said that during the formation of the Earth, the heaviest elements were attracted to the Earth's core. This means that it is difficult to find a lot of gold near the earth's crust. However, scattered gold can still be found. “There are gold deposits in various rocks in the earth's crust,†Fedorchuk pointed out. “But the gold concentration must reach a certain level to form a mine with mining value.†Fedorchuk said that the average concentration of gold in the earth's crust is "very, very low", only 4 billion. In order to form a mineral deposit with market value, the gold concentration needs to reach 1,250 times this level. And diamond is a common element - the product of carbon formed under extreme pressure, is a dense carbon element. Carbon also has a looser element called graphite, which is the substance that makes the pencil lead. Compared to gold, the average concentration of carbon in the earth's crust is about 200 million parts per billion. It can be seen that the rarity of a diamond has nothing to do with its elemental composition, but with its formation process. The natural transformation of carbon into diamonds is extremely difficult and has a very low success rate. “Diamonds can only be formed in the mantle and then brought to the surface by some means. In addition, meteorite impact can also form diamonds. But these diamonds are very small and rarely fine.†Fedorchuk said, “Diamonds can Formed deep in the mantle, and then brought to the surface by the deep magma, or gradually raised to the surface during the slow orogenic process. But in the process of gradual ascent, the diamond will become graphite, and never be precious. The form reaches the surface." The formation of diamonds depends on depth, temperature and pressure. The carbon is buried 150 kilometers underground, heated to 1204 degrees Celsius at an amazing high pressure of 5 billion kPa, and then quickly brought to the surface by volcanic eruptions. Because this process is too difficult, natural diamonds that can be mined are more rare than gold. But as far as elements are concerned, gold is much more rare than diamonds. After all, carbon is one of the most abundant elements on earth, especially compared to heavy metals such as gold. Diamonds are carbon in the end, but they are formed under extremely high pressure. The invention of synthetic diamonds has made the problem of "which is more rare in diamonds and gold" more complicated. Scientists can create the necessary conditions in the laboratory to convert graphite into diamonds, a process that does not require volcanic eruptions. But gold won't work (unfortunately, alchemy is just a gimmick). But although the composition of synthetic diamonds is exactly the same as natural diamonds, people still think that its value is not comparable to natural diamonds, so the price of synthetic diamonds is often 30% lower than natural diamonds. Ponte De Roma Fabric,Ponte De Roma Knit Fabric,Roma Ponte Fabric,Ponte De Roma Knit Jiangyin Xiangxu Textile Co., Ltd. , https://www.xiangxutextile.com
October 28, 2024