Jade is a jade stone with a polycrystalline interwoven structure. Simply put, it is a collection of countless translucent mirrors with their own reflective properties. The "mirrors" of jade not only reflect each other, but also shoot at each other. These optical reactions constitute what we often call the gloss of jade. In the jargon of the jade industry, the best quality light performances are fluorescent light, oily light and rigid light, followed by glass light and then waxy light. The worse performance is stone light. The luster of fluorescent jade is actually a normal optical phenomenon. The micro-crystals inside the jade are arranged neatly and orderly, causing the overall refractive index to become more obvious after light enters the jade. Jadeite of the glutinous grade and above may show the fluorescence phenomenon, and the closer the shape of the jadeite is to a perfect circle, the more obvious the fluorescence effect will be. This is also one of the reasons why carvers try to make spherical objects and figures as round as possible in finished jade products. Oily sheen means that visually, we can see that the jade seems to have been brushed with oil. This requires the jade crystals to be quite fine. When light enters jade, the same beam of light is decomposed into many rays of uniform size that gradually diffuse. They are evenly distributed on the surface of jade crystals, ensuring the transparency of the jade while also reflecting the shape of the light when it shines on a single crystal. Rigid Light Rigid light represents the excellent transparency and reflective ability of jade crystal. In the jade market, we often hear the terms "full of hardness, having a strong flavor, and having hardness", which refer to this ability. Vitreous luster is a light characteristic possessed by most jade products. Jadeite with a glassy luster usually has crystals of average quality and a relatively tight arrangement. It is easier for obvious glass luster to appear on jade products of younger quality. This kind of jade is not very special, it is just ordinary, but it has good gloss and the price is relatively moderate. Waxy and stone-like luster usually appears on inferior jadeite. The main problem with jadeite of poor quality is that the crystals are loose, the quality is tender, and the light transmission effect is poor. No matter how good the water head of the jadeite is, it will have a loose visual effect.
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