If you know, tell me about the luster of the jade.

Answer 1

Jadeite was a multicrystal structure, similar to the collection of countless translucent mirrors with reflective properties. There were optical reactions between mirrors, such as reflection and mutual reflection, which constituted its luster. Generally, when a jade product with a thickness of about one centimeter and a circular shape showed a visual effect such as lustrous light, oily light, rigid light, glass light, wax light, stone light, etc., it could reflect the quality of the jade crystal, water content, and clarity.

In terms of light, it was a normal optical phenomenon. When the particles inside the jade were arranged neatly and orderly, the overall refraction index was more obvious after the light entered. Jade with a high degree of clarity could reflect the luster under natural light, while jade with a low degree of clarity needed a strong artificial light source (such as a flashlight) to be seen. In theory, jade of glutinous species and above might show the phenomenon of luster, and the closer the shape was to a perfect circle, the more obvious the effect of luster.

Oily light showed that the jade looked like it had been brushed with oil. It required the jade crystal to be quite delicate. After the light entered, the same beam of light was broken down into light rays of the same size and gradually spread out. They were evenly distributed on the surface of the crystal, ensuring that it was transparent and at the same time reflecting the shape of the light when it shone on a single crystal.

The rigid light meant that the jade crystal had excellent clarity and reflective ability. It could have a similar glowing effect under natural light. The market often said that it was "hard and tasty" and so on, which referred to this ability. The jade crystal was translucent, and the intensity of the reflected light determined the quality of the clarity.

Glass luster was a characteristic of most jade products. The quality of the crystals was average, and the order was relatively close. Especially the tender jade products were more likely to have obvious glass luster.

In the jargon of the jade industry, the best light performance was the fluorescent light, oily light, and rigid light, followed by the glass light, then the wax light, and the stone light performance was relatively poor.
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