One eye seems to be identifying. People who have been in contact with jade for many years can identify what jade it is and even its origin by looking at its color, luster and structure.

2. Identification by jewelry instruments. Density is measured by densitometer, refractive index is measured by refractometer, and jade species are identified by testing data.

I usually use the instrument to test it first. If it is hetian jade, I can see the place of origin through my eyes.

Sticking to the skin can't determine the source.

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