Unreliable jadeite identification method
1, dripping method-in fact, it is relatively rare to identify jadeite by dripping method, and its identification method is as follows: if the water drops on jadeite are cylindrical, they are A jadeite. The principle of doing this is to use the tension phenomenon on the smooth surface of jadeite. The reason why this method can be used for identification is that the production method of goods B is relatively backward in previous years, and there will be acid-etched reticulation and acid-etched pits on the surface, and water droplets will not form round beads. But in recent years, B goods will be polished or waxed, the surface will be brightened, and water droplets will form columns.
2. It is the real jade that can cut glass-many businesses will tell consumers that jade has high hardness, so it is the real jade that can cut glass. Everyone should know that glass is timely, the hardness is 7, and the hardness of jade is 6.5 to 7. But glass is aphanitic, and the hardness of all parts is the same; Emerald is polycrystalline, the hardness of each part is inconsistent, and the hardness is different. If jadeite is used to cut glass, there will be some damage, but other jadeite with high hardness can easily cut glass.
3, feel cool is the real jade-because of the thermal conductivity of jade, so some people say that jade is the real jade when worn on the hand, which is still useful for plastic glass, but useless for jade. If others pass off B goods, C goods or other jade as A goods, this method will not work. The human body has a temperature. If you touch a hot or cold object, the temperature of your hand will also change. It is not enough to rely solely on the temperature of the hand.
A truly practical evaluation method
After listing several jadeite identification methods that can be eliminated, some friends may ask: How should we identify jadeite now? Here, we give two most reliable methods:
1. If it is a real jade, it must have its unique ID card-appraisal certificate. According to this certificate, consumers can inquire whether jadeite is as described above. If it is different, this jade may be fake.
2. In today's era, every big city has a special jewelry and jade appraisal institution. It is the safest and safest method to send jadeite directly to an appraisal institution for appraisal.
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