Why do the jadeite photos on the appraisal certificate generally feel quite different from the real thing?

Why does the jadeite photo on the appraisal certificate generally feel quite different from the real thing? This difference is mainly reflected in the transparency and color.

In the identification certificate, the pictures of the artifacts are usually taken vertically, which will make the color of jadeite in the certificate picture slightly greener than that of the real objects, and its transparency is weaker than that of the real objects.

This is because jadeite is composed of crystal structure, light is easy to transmit and refract, and it is the most objective material embodiment when the object is fully lit in natural light, but vertical shooting has great limitations.

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