I often hear people say that jade is a kind of spiritual ornament that can drive away evil spirits and bring good luck to people. It can be used as amulet. So have you heard that jade will change color? This kind of discoloration does not mean that the jade has life, but the "green" on the jade has a slight enlargement under special conditions. Let 's discuss the knowledge about the color change of jadeite with everyone in the China Jewelry Merchants Network . Let's take a look.
The formation of "green" in jade
Jadeite is the only gem-quality jadeite of jade species. Its mineralogical composition is called sodium pyroxene. Under normal conditions, pure soda pyroxene is colorless. Once added with chromium, pure sodium pyroxene will appear. Out of green. Therefore, whether natural jadeite is green or not is related to the presence or absence of "chromium" elements in the formation of jadeite.
According to experts, the more "chrome" elements, the greener the color of jade, but jade jewelry such as jade bracelets and jade necklaces are products made from pure natural jadeite. The content of internal "chromium" has been relatively Fixed, its green 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.
Jade will "discolor"
The discoloration here does not mean that the green color in the jade becomes other colors, but the green color will be relatively diffuse, thicker or lighter, because the chromium in the jade is not completely fixed, and people feel that the green becomes "long". In fact, because of the small amount of chromium inside the jewelry, the green "long" jade jewelry mainly consists of jade jewelry, such as jade necklace, jade bracelet and jadeite brand, which are in close contact with the skin.
Why is there such a change? This is because the human body has a certain temperature, and when it is sweating when it is hot, the acid and alkaline components in the sweat will penetrate into the jadeite through the micro-cracks of the jade jewelry. These components may chemically react with chromium ions, or dissolve the chromium ions that have been consolidated in the jade to cause flow migration, so that the green color of the jade becomes "long" and "large". In addition to some changes in green, the pattern of jewelry will change slightly, and its value will not change.
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