玉石的鉴别方法（Identification method of jade）.doc

玉石的鉴别方法（Identification method of jade） Jade quality evaluation Jade varieties of raw materials and quality is directly related to the value of jewelry and jade, jade and jade is the only correct judgment of value, in order to better evaluate the value of a piece of jade. Chinas jade carving industry available jade varieties, but the main varieties are not many, there are jade, Shan Shiyu (Ruan Yu), agate, turquoise, lapis, quartz, malachite, petrified wood, quartzite, crystal, jade, Dushan jade etc.. I. jadeite jade Jade raw materials vary widely, high-grade raw materials less than 1000 grams of small pieces, worth tens of millions or even billions of yuan, a few tons of heavy jade raw materials may be only a few kilograms per kilogram, the value of the difference of tens of thousands of times. It can also be said that jade is the only gem without weighing its value. Because of this, the quality evaluation of jadeite jade is more important. How to evaluate the quality of a jade raw material is a problem that many experts have studied and thought. Integrated existing research results, we can from the following aspects to analyze?: (a) color: Color is the most important factor in evaluation of jade, emerald green is the highest value, followed by red, lotus root starch color, color has a direct impact on the value of jade. To consider the color of good or bad, it is necessary to analyze whether the color of jade is positive, whether the shade is appropriate, the temperature of the color, and whether the distribution of the color is even and so on. 1, jade pure color is very ideal, but natural jade is often produced is not pure color, some partial yellow, some partial blue, and some jade has gray hue. We are pure green as the best, in turn, according to the color of the strong and then divided into several files, so that we can roughly grasp the color classification and grade. 2, the color of the shade is also very important, too strong color will affect transparency,