Identification method of ancient jade articles: Check fabric fiber marks : Many ancient jade are placed directly on the human body or wrapped in fabric. Under certain temperature, humidity and pressure, the fibers and pigments fall off and firmly adhere to the surface of the object. Therefore, under the microscope, even the naked eye can see the fabric fibers of red, blue, green and other colors, and the latitude and longitude are distinct. Insect eggs and debris: mostly in the gaps of ancient jade. Water stains: In the case of relatively stable geological and atmospheric conditions, there are often subtle flows in the underground of the burial grounds. They are constantly flowing and perennial, infiltrating and eroding the surface of jade, forming fluid, deep and shallow water. Stains. Inspecting the rhizome marks of plants: Some plant roots have the characteristics of perforation. The acid substances decomposed by the metabolism of plant proteins can cause erosion on the surface of the utensils, so it can see the root-like impressions with clear overlapping relationship. Inspecting carbonization marks : The ancients had the custom of “cavity jadeâ€. The burnt jade has the attachment and infiltration of bio-carbon, which is distributed in points and planes, and is often deep and cannot be eliminated. Inspecting the Remnants of Exorcism Minerals (Ancient Funeral Customs) Some minerals in nature have the functions of sterilization, deworming, and antisepsis. The ancients thought that they had the effect of driving away evil spirits and placing them in tombs and homes. Therefore, some ancient jade is wrapped or impregnated with mineral powders such as hematite, cinnabar, and realgar. The magnesia or even the naked eye can see the mineral particles remaining on the surface or in the gap of the object. Under the action of hydration and weak acid, the coloring ions From the inside and outside of the table, it gradually penetrates into the interior of the jade, and the color is dazzling. Archaeological discoveries, the cavemen 20,000 years ago, have scattered a large amount of hematite powder in the cave, and also dyed the beads made of limestone into red because of aesthetic needs. In the warring countries of China and the large tombs of the Han Dynasty, there are often a large number of cinnabars and jade articles dyed brightly by cinnabar, such as the tomb of Yue Wang. Inspect the gaps and the gravel filled in the holes : there are a large number of silica and calcium carbonate minerals on the surface. They can exist in the form of liquid or solid gravel, and gather in the gaps, silicon junctions, and knots. Tough and tough, even a small stone that enters the gap with the water is difficult to remove. Drill marks : Since the drill has appeared, the drill bit is basically conical or diamond shaped. Because it is manpower, the pressure is small, the drilling speed is slow, the non-uniform speed is slow, and the footage is slow. The drill marks appear as reciprocating and relatively parallel movements, and there is a non-uniform swirl pattern. Modern spiral drills do not have parallel drill marks due to high speed and uniform rotation. In the Neolithic Age, the stone-rocking period was similar to that of the ancient drilling tools using metal drills. In short, the identification and evaluation of ancient jade requires both detailed observation and comprehensive analysis; it is necessary to grasp the microscopic, but also to grasp the essence and the authenticity of the whole, and avoid exaggerating or neglecting the partial. Only by excluding the possibility of each subtle nuance, and then summarizing, deducting and reasoning, and maximizing the combination of sensibility and rationality to think and judge, can we obtain the maximum authenticity. Portable Electronic Scale,Small Scale,Food Scale For Weight Loss,Precision Portable Scale Shanghai Liuyuan Trading Co. , Ltd. , https://www.ly-weighing.com