From the material point of view, it is necessary to see the color, pattern and transparency, green and moist, the pattern is young and arranged in order, uniform and transparent is the first choice. In addition, styling, ornamentation, artistic conception, and fine work are indispensable factors, and the two complement each other to have a high collection value. In the market, Dandong Stone is a fake imitation of South Jade. In fact, the two are very different. Dandong stone is green but not transparent, with low hardness and low density. The surface color is weathered and becomes heavy. This is to be discerned when buying Southern Jasper. Variety identification [Mountain material] Because Nanyu is mainly based on mining veins, there are no jade blocks with weathered surface skin or thin weathered layers. Most of them are raw ore mined from mines, also known as mountain jade and mineral jade. The original jade mine on the mountain. It is mostly green, yellow green, green brown and blue and white. [ç’žæ–™] There is also a talc mineral associated jade, with a thick weathered surface skin, generally small size, small amount of jade, color is white weathered leather wrapped, with weathered soil, talc, quartz or mica residue. The jade color is mostly white and blue, and it is mostly white jade, but the hardness is low. [Type] There are mainly green, yellow, green, blue, blue, blue and white, and a small amount of ink jade. [Jade quality] The exterior has a greasy or waxy luster, translucent, fine jade, and semi-transparent under the light. It can be seen that the jade has a fibrous pattern of leaf-like serpentine and the head is moist. [Hardness] is a kind of nephrite with a hardness of 4.2~5 Mohs. Compared with other jadeite, the hardness is larger, and the scratch on the surface of the wound is not obvious. [Color] South jade is serpentine, more than two colors, between jade colors, between colors, pure color, rich color. The color is not chaotic. The color change of multi-color jade is very complicated, and each has its own characteristics, some are dipped, and the color decreases from the outside to the inside or from the inside to the outside. Some colors are like a group of floating, flying clouds, from concentration to dispersion, from dispersion to concentration, silky, thick and light; some of this piece of white, that piece of yellow, another piece of green, long together and clearly defined There is also a thin layer of skin on the skin, which is all in one color, and the situation is beautiful. True and false identification Nanyu is a serpentine jade. The reliable way to distinguish it is to look, listen, touch, and taste. ã€Look】 The jade has a lustrous and oily texture. The structure of the jade itself is dense and tough, and the texture is well-organized. The interior of the jade has a fiber-interwoven structure with fine grain size. If there is no natural stone, it must be fake jade. True jade has no bubbles, and artificial glass has no structure, and bubbles can be seen. There are bubbles that must be fake jade. Look at the crystal inside with a magnifying glass of 10 or 30 times to see if there are small cracks like spider webs, the color on the cracks or on the surface of the jade is fake. ã€listen】 The true jade sound is crisp, and the fake jade sounds dull. The glass sounds sleek. ã€touch】 True jade: It has a sense of grease, and it has a gentle feeling in the hands. Zhenyu touched it with his hand and felt cold and lubricated. Put the jade on the face, feel cold, and warm up after a few seconds. True jade heat transfer is fast and fast. ã€taste】 The tip of the tongue is full of jade, and the fake jade is innocent. [good or bad] The pros and cons of jade mainly depends on whether its color is rich (rich as frozen), yang (clear and clear), pretty (colorful and fresh), positive (pure and no sub-color), and (soft and soft) 5 Features. If it is basically consistent, it is the top grade, that is, the beautiful jade. If jade appears light (plain), overcast (dark), old (color), flower (impurity), miscellaneous (multiple floc), it is the next product. Under the magnifying glass, the crack-free ones are superior quality jade, and those with cracks are the second. Military Caps,Military Style Cap,Military Cap Online,Military Baseball Caps Henan J&F Headwear Group , https://www.jianfengcap.com