It usually takes two or three years to wear. Natural jadeite will be moist for a long time, but it will not change color. On the contrary (artificial coloring will change). Generally speaking, the green color on jade ornaments is lifeless. The longer you wear them, the bigger the green color will be, but under special circumstances, the green color will swell slightly. Jade, also called jadeite, is the name of gem jade, and its mineralogical name is Jiguanshi. In the study of artificial jadeite, it is proved that pure sodalite is colorless and can only appear green after adding chromium chemical reagent. Therefore, the natural jadeite belt is not green, depending on whether there is' mixed' chromium inside the jadeite when it is formed. The more chromium is mixed, the greener the jadeite is. However, the content of chromium in rings or other jewelry processed from jadeite obtained from mines or rivers is fixed. So the green on the jade can't be alive. However, in some cases, the chromium in jadeite can produce chemical reaction, which makes a small amount of chromium diffuse, which is also the reason why people think that green is' long'. The jadeites that produce green dragons mainly include jadeite necklaces, jadeite bracelets, jadeite necklaces and other jadeites that are in close contact with the skin. The reason is that the human body has a certain temperature and is prone to sweating. There are acidic or alkaline components in sweat, which can penetrate into the interior from the microcracks of jadeite. Some of them may react with chromium ions to produce green or dissolve the chromium ions that have been consolidated in jadeite to produce migration, making it look green. In fact, the content of green chromium in jadeite has not changed, but the diffusion or migration of trace chromium. Long-term wear, with the human body temperature and some chemicals, many jade will look better and better. However, there are exceptions. Some people wear it for a long time, but it will be dull, which is determined by their physique. For example, the wearer's sweat is too acidic, which will damage the quality of jade, so it cannot be generalized. Because the constitution is not clear, it is recommended to wear it for a period of time to observe. If the gloss gets better, it will become more and more transparent as long as it takes time.