Myanmar is the main producing area of ​​jade. Russia, the United States, Guatemala and other countries also produce jade, but the jade produced in these countries is not worth mentioning because it is not up to the gem level. The fine jade is only produced in the Lulu River, a tributary of the Irrawaddy River in Myanmar. Within a few hundred square kilometers, the uniqueness of jade production, the complexity of mineralization, and the uncertainty of production have made jade more rare and more collectible than diamonds. As the saying goes, "gold is easy to get, and jade is hard to find."
Although jade is scarce, not all jadeites have collection value. Ou Yan, secretary-general of the Jade Professional Committee of China Gem Jade Association, said that the general line of jade is divided into three grades: A, B and C. Class A jade is a pure natural product. , that is, jade natural, original stone primary color, commonly known as "positive color", it does not undergo "internal treatment", the water color is permanent. B-grade jade is due to the internal impurities containing more impurities, the color is not transparent. Some jade merchants adopt Strong acid soaks and corrodes B-grade jadeite, removes impurities, and then uses high pressure to pour epoxy resin into tiny cracks caused by strong acid corrosion, which acts to fill and consolidate cracks. The jade used in this process uses one or two. It is extremely fragile after the year. Class C jade is a dyed jade. The method is to repeat the heating with chemical agents and infiltrate the chrome element to make it look green, purple or red. This kind of jadeite is not bright. Under the light, the color does not exist naturally in the interior of the jadeite crystal, but is filled in the cracks of the mineral, showing a network distribution. Only the A cargo jade has value preservation.
Ao Yan said that the value of jadeite is not judged by the age of the age. Collecting jadeite should choose pure natural authenticity, and pay attention to "species", that is, the texture and structure of jadeite. The finer the texture, the more crystallized the jade is; "Color" refers to color, uniform color, color positive, thick, and green is the top grade; "water head" is transparency, lustrous crystal clear, clear and clear is the top grade, and the so-called "glass type" is the transparent high emerald.
After hundreds of years of mining, the real A-car jade has become more and more scarce. Now the purchase price of glass jade jewelry is hard to be less than 3,000 yuan. If there is a high green color on the glass jade jewelry, the price can reach Five or six hundred thousand yuan, if it is a green jade jewelry, as long as the carving is fine and beautiful, its price may be more than 10 million yuan.
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