The method of identification of ancient jade is not simple, because the ancient jade is subject to different environments and changes to varying degrees. Usually, the acidity or active substance in 300 years can penetrate the jade skin and enter the jade, while other substances are only attached to the surface; the jade material in 500 years usually passes through the surface of the jade, and if there is mercury Intrusion will form a haze in the ancient jade; in ancient jade around 1000 years, usually the matter will enter the texture, and mercury can form bright red or gray-black spots on its surface. Here are four main features for the identification of ancient jade. Ditch yellow: Yellow refers to the phenomenon of discoloration. The color change of jade is first changed from the ditch, and the color is getting deeper and deeper. If it is yellow in the ditch, it takes at least one hundred years. Padding: The ancestral gavage of the ancestors changed very quickly, and it only took about twenty or thirty years to appear. If it was the emery of the ancient jade, it would become very slow, and many ancient jade buried in the ground would never come out. Padding, and the longer the age, the thicker the patina of the ancient jade, this method is one of the important methods of ancient jade identification. Frost dust mites: The surface of the ancient jade is like a frosty earth. A layer of white is like frost and snow, and it is like dust floating on the surface of ancient jade. This phenomenon cannot be wiped off, and at least the ancient jade that forms this phenomenon is at least It has a history of more than 120 years. 绺璺æ²: It takes 70 or 80 years to break into the color, and it takes at least 200 years to break into mercury. SUSAN GIFTS CO.,LIMITED , https://www.susangifts.com