In the study of artificial jade, it was confirmed that pure spodumene is colorless, and only green chemicals can be added after the addition of chromium chemicals. The green of jade is related to the content of "chromium". "Jadeite" usually refers to jadeite that reaches gem-quality. Pure soda pyroxene is colorless. Once the "chrome" element is added, pure sodium pyroxene will appear. green. Therefore, whether natural jadeite is green or not is related to the presence or absence of "chromium" elements in the formation of jadeite. Therefore, the natural jade belt does not have green color, so it is seen that there is no “mixed in” chromium inside the jadeite, and the more the “mixed in” chromium, the greener the jade. However, jade jewelry is a pure natural jade processed product. Its internal “chromium” content has been relatively fixed, and its green color should not change. That is to say, even if its raw materials are obtained from mines or rivers, the content of chromium is basically fixed after artificial carving.

If it is iron-containing, it looks more red. In fact, there is no change in the content of green chromium produced in jade, only traces of chromium are diffused or migrated; except for some movements of green, the pattern of jewelry will change slightly, and its value is unchanged. There is also a view that the emerald is placed in a relatively warm and humid environment, the human body is undoubtedly the best and most ideal "equipment." The constant temperature of the human body and the slightly acidic water vapor and oil stains will penetrate through the pores of the crystal gap, and the water vapor that has been lost by the jadeite will be replenished, so that the jade will be moisturized and moisturized, and it will gradually become transparent. Sometimes, because the material of Cuiin becomes transparent, the original color is relatively lighter, or some of them will become relatively darker, just like the colored clothes are darkened after the water is wet. If the material itself contains a coloring element, then the temperature is constant. The color-developing element is further oxidized under the action of slightly acidic water, and then a strange "long" color phenomenon is seen.

From a professional point of view, jadeite formation and 550 degrees - 580 degrees of high temperature and nearly 30,000 atmospheres of ultra-high conditions, in the normal temperature and pressure of wearing or preservation environment, jade planting water and color is simply impossible Any change. What needs to be emphasized here is that the so-called "long water" and "long color" are just a visual effect. After long-term wear of jade, the oil of the wearer's skin can be immersed in the surface of the jade in a small amount, which slightly improves the transparency of the jade surface, and accordingly makes the color of the jade look a bit more. This is the commercial jade. The real reason for "water" and "long color".

Especially the jade pendants such as the jade jade Guanyin that has been hung on the chest for a long time. Because the human body has a certain temperature, it is easy to sweat. The sweat has acid or alkaline components. These components can penetrate into the interior from the fine cracks of the jade. These ingredients may chemically react with the production of green chromium ions or dissolve the chromium ions that have been consolidated in the jade, so that the green on the jade is "long".

However, in some cases, chromium in jade can produce a chemical reaction, so that chromium has a small amount of diffusion, which is why people think that green is "long". The jadeite that produces green "long" is mainly jadeite with jade necklace, jade bracelet and jadeite brand that are in close contact with the skin. The reason is that the human body has a certain temperature and is also prone to sweating. The sweat has acid or alkaline components. These components can penetrate into the microcracks of the jade, some of which may react with the green chromium ions. Or dissolve the chromium ions that have been consolidated in the jade to produce migration, so that the green is "long". In fact, there is no change in the content of green chromium produced in jade, only trace amounts of chromium are diffused or migrated.

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