和田玉白玉及籽料之鉴别

和田玉白玉及籽料之鉴别 Hetian jade and jade seed material identification Hetian jade collection continues to heat up, and the attendant is yijiachongzhen jade materials and finished product, shoddy phenomenon spread rapidly. Especially Tian Baiyu, because of its highly popular game player, so it is also the main target of the attack of fraud and selling them. For example, in white Aventurine and posing as Tian Baiyu, with white colored marble (the white marble) as white, with white glass (feeder) as jade sales, or take the Russian material, Qinghai material and mixed material field (strictly speaking, Qinghai is not better than the Russian material, material and material properties on the gem in the field of difference what is the difference in price, the sale of the market mindset. This is another topic). These phenomena are common in the market, and collectors are often deceived. I. identification of Hetian jade (white jade) The mineral composition of Hetian jade is mainly tremolite, and contains trace minerals such as serpentine, graphite, magnet and so on, forming different colors such as white, green, black and yellow. Most are monochrome jade, and a few are variegated. Jade is translucent, after polishing a lipid like luster, hardness of 5.5 degrees to 6.4 degrees. Hetian jade cooked at an altitude of 3500 meters to 5000 meters of rocks, after long-term differentiation into fragments of different sizes, caving in the hillside, and then washed into the river by rain. When the river dries up in the autumn, the jade pieces collected in the river bed are called seed jade. They are called mountain materials in the mining of the rock strata, and are exposed to the mountains or have been washed down by the river. It is not difficult to distinguish between grasping and the main features of Tian Yu. Aventurine (Aventurine) hardness of 7, the proportion of 2.65, is the name of Aventurine, the main chemical composition is silica, because belong quartzite jade, therefore, has the typical granular structure (internal structure like a grain of sand together, also known as sea feeling) stone or Aventurine, most premature in India, it is also called "India jade". Mostly opaque and occasionally partly translucent, the hardness is almost like crystal. The green Dongling stone was once called India jade. As for marble, jade is not unique and beautiful moist luster, no greasy feeling; glass luster dazzling, often the internal bubble, not oily, and these jade difference is very big, careful not difficult to identify. Russia is also a mountain of the same material and material composition, because the mines in the territory of Russia and called Russia, its price is much lower, but the characteristics of white jade water is transparent too heavy, and the density of oil are not authentic Hetian jade expected good son! The real white jade, at present the country there is no standard, it is produced in the snow covered ice. If the white jade suet suet, not only white and not against green, the high degree of oil, not the general color level reached suet mountain material or sub jade unmatched. Some old players play jade for decades, but also a rare request. The white jade has difficulty of the high plus its rarity, so often find jade white jade difficult, almost inaccessible sense. It can be said that now is rich, also can not buy Jingjue quality white jade. However, according to the modern gem experts explained that the white jade mainly refers to the color of fat white or white, slightly pale blue, yellow and so on milk pan, delicate texture moist, oil well, There are a small stone and other impurities. In this interpretation, the scope is more wide white jade. Two, the identification of Hetian seed material False: A, seed material and nephrite seed material due to water erosion, infiltration, Reiki take days, the essence of the essence, connotation, exquisite and perfect, nourish the body. Superior white crystal seed material such as grease, texture and luster is other than white jade. Artificial seed material, usually do not is: the mountain material jade or other similar jade and marble cutting and polishing, make the seed jade appearance, complemented by skin and dyeing. Of course, this is not difficult to identify. Natural jade seed surface system in river water by month after month and year after year, sanding, both moist and full of fine sand like hair like skin, the bark is uneven and the shape of arc pit, very natural, artificial and fake jade seed will leave traces of blunt. B, color: false seed Hotan jade appearance distribution of a layer of brown red or brown yellow jade skin, so used is called the pale seed jade. A pear, red, black, reed and so forth, with various kinds of color jade carving artists as jade, such as pear peel and seeds, seeds, tiger zaopi red, yellow, black seeds and sprinkle. The world many jade with the color, but not as beautiful skin of Hetian jade. Use light can make pretty color jade, a natural interest, called po. Hetian jade seed skin form various, some into the clouds, some veins, some become scattered spots. The formation of color skin is secondary, very thin (about 1MM thick), caused by oxidation. Since ancient times, with the same color of seed material prices than without the color of seed material is much more expensive. Natural bright light, and is the special characteristic of Tian Yuzai material, but also a symbol. The market is a false seed jade in the trickster, of course there is a fake leather seed jade everywhere tempt consumers. "With color jade jade seed is equal to this is a rough identification of seed jade, it is now counterfeiters use for deception, some false seed jade skin color, but also some really do (because some seed jade color jade seed material texture, color is not good enough to sell good price and skin). The general method is to first do the fake jade heat, then put into the dark pigment and other chemical dyes in immersion. Immerse it in color. False color generally gives the impression that the color of stiff, not to live, not natural, because of the high temperature crack, raw materials produced by the table to eat into the color is not natural, compared to those who by nature edification and oxidation of the natural skin color is completely different. There are many methods of processing artificial leather, so we need to very carefully to identify. Here, several effective methods are summed up from the color of jade enthusiasts see Hetian jade seed material pores. Hetian jade in any case fake, always have people to see through the place. Such as skin color and roll from the starting material identification, when you can get a glimpse of the one or two. I. raw leather. True seed material in the river after thousands of years of erosion tempered by the nature of the Qin, it will place in the texture of soft pine Qinru colors, place the child in a split depth texture. This is a natural skin color, called the living skin. Its color is immersed in jade, there is a sense of layering, the transition is natural, and the feeling of skin and meat is consistent. The color on the skin should be from deep to shallow, and the color on the crack should be from shallow to deep. In fact, good jade is not long leather, even if there are tiny spots, or in small crack house. Two dead skin. One fake leather posing as seed material, two is inclined to meet the jelly affection of various skin colors. Fake leather is top secret, but is said to use dyed carpet dyes, dye with sponge suction feet, the jade on the inside, and then try to penetrate. Leather materials are mostly affected by the things of the same metal salt Qin and seed jade in the natural environment, mostly purplish red. This kind of leather floats on the surface, the color is too bright, there is no transition of natural layering, and dry and moist. The site of fake leather jade osteoporosis in place, called the dead skin. This skin color using a hot boiling water is easy to fade fades. Three, roll material. The market expected to roll posing as seed material. Roll material is expected and even the mountains from Qinghai, Russia, small jade material, into the drum machine roll grinding, grinding ovate, like the seed material, and then dyed imitation leather posing. Counterfeiters are even cut large pieces of polished material into small mountain material. Four, sweat pores. Sweat pores are a substitute here. There is no sweat pores, the real trick is to identify genuine seed material. The true seed material, no matter how delicate, and its surface, there will be numerous thin thick holes, much like human skin, the sweat pores. This kind of surface phenomenon formed in the natural state is by no means artificial and can be forged. It can be seen clearly under ten times magnifying glass. With the sweat pores to identify true seed material is very effective. Because the material above a rolling roll grinding grinding, a road scratches, but not the natural state of "sweat pores". To master the basic knowledge of color, roll material and sweat pores, identify true and false seed material, while not very difficult.